Introduction
An operator prepares a location setup in a browser-based vending tool. They enter a location label, choose a product group and write a service note. The authenticated session expires before the task is finished. After signing in again, the dashboard appears, but the setup form is empty. This invented example shows a gap in a supplier demonstration: account access returned, while the interrupted work did not.
A procurement team can miss that gap if it ends the review at the login confirmation. Restoring access and restoring an activity are related but separate outcomes. The buyer needs to see whether the entered information remains available and whether the operator can proceed from an understandable state. A portal that requires rebuilding every field imposes a different workflow from one that resumes the pending activity.
This article draws on W3C Understanding SC 2.2.5: Re-authenticating and Technique G105, reviewed on 11 October 2026. The criterion is Level AAA. The sources guide a web-task acceptance request; they do not certify a cabinet, resolve local law or establish any WEIMI portal capability.
Quick Answer
The success criterion states that when an authenticated session expires, the user can continue the activity without loss of data after re-authenticating. W3C’s explanation describes people being logged out during a transaction and needing to resume with information already entered. Its checkout example restores both the same information and the same stage after the user returns.
G105 provides a concrete test sequence: begin a logged-in timed activity, allow expiry, submit the data, re-authenticate and check that the process can continue and be completed without loss. Its check includes the original data and any changes made after re-authentication. A recovered screenshot alone is therefore weaker evidence than a sample that can actually continue through its agreed completion.
Keep the comparison scoped to a supplied authenticated web activity. A public page with no login has a different scope. A warning about inactivity, a secure logout and a successful second login are not substitutes for demonstrating the data and activity after return.
Comparison Table
Select a vending format from the public equipment evidence, then identify the web activity included in the offer. Recovery quality cannot be inferred from the cabinet design.
| Public candidate |
Retail-format evidence |
Continuation question if a web tool is supplied |
| Single-Door AI Vision Smart Fridge for Packaged Drinks |
Camera-based recognition of compatible packaged goods, with five shelf levels and five baskets. |
Does an interrupted product-setup task resume with the entered values available? |
| WM22 Snacks and Drinks Vending Machine |
Touchscreen selection, inventory management, cooling and several dispensing options. |
Can an offered inventory activity continue after authentication expires, including a later correction? |
| Two Cabinets, More Choice: Snack & Drink Vending Station |
Main display with an additional visible spiral-stock area. |
Does a recovered draft retain the intended selling-section context and its sample entries? |
The questions describe proposed acceptance work, not features confirmed for these machines. The quotation should name the software deliverable and version. Avoid introducing a recovery requirement into a hardware-only comparison without defining the relevant interface.
Who Should Buy This
Use this brief for equipment packages that include authenticated browser-based location setup, inventory entry, operator configuration or service reporting. It is useful where a task takes long enough for session expiry or another provider-managed logout condition to interrupt work. The purchasing question is what survives and what the operator can do after a successful return.
Include the business workflow owner in the review. They know which values would take time to reconstruct and which stage matters. A technical provider can demonstrate a login, but the workflow owner can determine whether the recovered activity remains understandable and complete. Use their sample-field manifest to avoid accepting a superficially restored screen with an incomplete business record.
Users may need additional time because they read slowly, navigate with a screen reader, use alternative input or face motor limitations. W3C describes these needs as reasons continuation matters. Ordinary operational interruptions can make the same purchasing question relevant. Do not require users to complete a hurried form as the only way to avoid loss.
How We Evaluate Smart Vending Machines
The hardware discussion is a shortlist from public listings. We have not logged into the listed machines, induced their session expiry or tested their recovery paths. The following protocol is proposed for a supplier-controlled demonstration using permitted sample data.
- Identify the activity. Record its version, starting route, intended user and completion boundary.
- Create the sample. Use a unique location label, controlled quantities and a harmless note. Keep a field-by-field reference.
- Reach an intermediate stage. Record what has been entered and what remains unfinished.
- Allow the agreed expiry. Follow the provider’s demonstration conditions. Do not weaken authentication settings or expose real operator credentials.
- Return through authentication. Use the legitimate offered route and inspect the recovered activity.
- Continue with a change. Correct one sample field after return, then complete the sample workflow in the agreed test environment.
- Reconcile the result. Check both original information and the later correction. Record exclusions and unresolved outcomes.
When the observed route differs from the G105 example, the provider should explain its mechanism and the evidence supporting the requirement. Techniques are not mandatory implementations. A buyer can use the data-continuation outcome without prescribing an unseen server architecture.
Key Buying Factors
Actual interruption route. A manual logout may not follow the same path as expiry during a pending submission. Ask the provider to demonstrate the condition relevant to the offer. Do not replace the requested expiry case with an easier action and assume equivalent retention.
Entered versus committed information. A completed saved record is not the same as a partly completed activity. Mark which sample values were entered before expiry and which were already committed. Otherwise a provider may show an existing record while the unfinished values were lost.
Stage and context. A return to a generic dashboard can leave the user searching for the pending process. W3C’s examples preserve context as well as information. Agree how the operator reaches the relevant activity and verify that the location, product group or intended selling section remains clear.
Post-return changes. A form can display the old values yet fail to keep a later edit. G105’s test expressly checks original data and changes after re-authentication. Include one recognisable correction in the sample result so the demonstration reaches beyond visual restoration.
Access and temporary retention. Data preservation does not justify granting another user access to the prior operator’s pending work. Ask the provider to identify the legitimate recovery route and the applicable retention boundary. G105 describes temporary storage rather than an indefinite archive; its one-day illustration is not a universal rule for a vending deployment.
Other timing requirements. The Understanding page notes that sites with time limits and re-authentication remain subject to other criteria, such as Timing Adjustable. Passing this particular continuation review does not establish that every timer, warning or authentication interaction has been assessed.
Best Smart Vending Machines
These are three real listed candidates for different merchandising formats. “Best” refers to shortlist fit, with the final choice dependent on the quote. No recovery behaviour or independent test result is assigned to them.
01
Single-Door AI Vision Smart Fridge for Packaged Drinks
Open manufacturer listing →
The single-door AI vision fridge listing describes cameras recognising selected packaged products, five shelf levels, five baskets and a top-screen or light-box option. It stores packaged goods rather than making fresh juice. Confirm cooling conditions and compatible recognition items in the offer. Where an authenticated browser-based product setup is supplied, use named sample entries to check recovery. The public listing does not prove that this software activity exists or survives expiry.
02
WM22 Snacks and Drinks Vending Machine
Open manufacturer listing →
WM22 is publicly described with a 21.5-inch touchscreen, inventory management and cooling. Spiral, conveyor, direct-push and hanging mechanisms are options; request the mechanism in the actual configuration. Match merchandise to that confirmed arrangement first. If an authenticated web inventory workflow is included, ask for evidence that an unfinished activity can resume and retain a controlled correction after the user returns. The hardware description does not supply that evidence.
03
Two Cabinets, More Choice: Snack & Drink Vending Station
Open manufacturer listing →
The dual-cabinet page shows a main product display and an additional visible spiral-stock area. Do not infer shared software, independently controlled cooling, an additional touchscreen or capacity from that presentation. In any quoted multi-section web workflow, mark the intended section in the sample manifest. Demonstrate that the returning operator continues the right activity with its original values and later edit. That is a proposed purchasing check, not an observed property of this cabinet.
Feature Comparison
| Checkpoint |
Evidence to retain |
What it does not establish |
| Authentication |
Successful return through the legitimate login route. |
That the interrupted values or task stage have returned. |
| Original entries |
Field comparison against the pre-expiry reference. |
That a later correction will survive completion. |
| Working context |
Recovered process, identified location and understandable continuation route. |
That all other workflows recover in the same way. |
| Later change |
One controlled correction made after re-authentication. |
That the portal has passed a full accessibility or security review. |
| Completion |
Agreed sample result containing the original and corrected information. |
Real stock accuracy, payment settlement or customer revenue. |
A procurement record should distinguish an observation from a provider’s explanation. The screen may show retained entries, while the supplier describes how temporary storage works. Record the explanation as supplied evidence; do not claim to have inspected backend storage from a visible form alone.
Cost & ROI Analysis
Consider a hypothetical review with 30 minutes preparing a field manifest, 35 minutes observing expiry and return, and 25 minutes reconciling the result. The assumed active work totals 90 minutes. At an assumed evaluator rate of US$45 per hour, the labour amount is US$67.50. These values are illustrative planning inputs, not WEIMI prices or measured customer outcomes.
| Assumed activity |
Minutes |
Illustrative cost |
| Sample and field manifest |
30 |
$22.50 |
| Observed expiry and return |
35 |
$26.25 |
| Original and corrected result review |
25 |
$18.75 |
| Total |
90 |
$67.50 |
Add waiting time as active labour only when an evaluator must actually remain engaged. A session-expiry interval can be scheduled alongside other work. If the provider cannot demonstrate the relevant condition, record the additional work separately rather than claiming the planned review was completed.
For a separate sensitivity example, assume reconstruction of one interrupted task takes 18 minutes at the same rate. Its assumed labour burden is US$13.50. Five avoided reconstructions would equal the US$67.50 review amount. This is arithmetic, not an assertion that five interruptions occur or that a recovery feature prevents them. Measure actual losses, recovery success and repetition before using the scenario as a business case.
Cabinet acquisition, integration, installation, replenishment and maintenance remain separate costs. A web-task continuation feature cannot justify a claim about machine payback without evidence of the deployment’s trading conditions and operating costs.
Best Choice by Scenario
Camera-recognised packaged merchandise. Begin with the single-door AI vision candidate when the quotation confirms a suitable recognition and storage scope. If product setup takes place in an included authenticated web tool, review that task’s recovery with actual sample fields. Retention cannot remedy incompatible merchandise.
Quoted dispensing mechanism. Consider WM22 when its selected mechanism and touchscreen format fit the intended products. An accompanying inventory task should be assessed on its own return path. Use a later quantity correction to check continued operation, without treating that test as proof of the cabinet’s physical dispense performance.
Additional displayed stock area. Consider the dual-cabinet format when the physical arrangement suits the site. If a web workflow distinguishes sections, keep the intended section explicit through recovery. Obtain the actual software scope before assuming the two areas share an authentication context.
Authenticated workflow outside the cabinet offer. A distributor or third-party portal may own the process. Identify the provider responsible for continuation and put the relevant evidence request in that part of the purchase. The equipment manufacturer cannot be presumed responsible for an unspecified external tool.
Applications
A location setup demonstration can use an invented location label and a non-operational note. Record the working stage, allow the agreed session expiry, sign in through the legitimate route and continue. The final sample should retain the label and any correction made after return. This checks an interrupted activity without pretending a real deployment occurred.
An inventory-entry demonstration can distinguish values already committed from quantities still pending. That distinction matters because a retained completed record may hide loss of the unfinished entry. Use a test location and agreed non-production data to avoid changing real stock during acceptance.
A service-report demonstration can compare a harmless note before and after expiry. If the offered process supports attachments, ask the provider whether those are part of the retained data boundary and include them only in an authorised sample. Do not infer attachment preservation from text retention.
A returned workflow should remain understandable to the operator. Record where the activity is found, which context is visible and whether the next action is clear. These are practical acceptance observations. They do not establish full assistive-technology compatibility or certify the interface against unrelated criteria.
FAQ
Is a successful login enough to demonstrate continuation?
No. It establishes that the authentication step succeeded. Show the activity after return and compare its entered data with the pre-expiry sample. Also check that the operator can continue and complete the task.
Is the reviewed re-authentication criterion Level AA?
W3C identifies SC 2.2.5 as Level AAA. State that level and the supplied web-content scope in the procurement request. This focused review does not establish full WCAG conformance.
Does a warning before logout satisfy the continuation requirement?
A warning can inform a user about a time limit, but it does not demonstrate that entered values survive re-authentication. W3C treats the ability to continue after expiry as a distinct outcome and notes that other timing criteria still apply.
Must the supplier use the G105 temporary-cache technique?
No. W3C techniques are examples of ways to meet the requirement, not mandatory implementations. G105 is a useful public reference for evidence of retained data, including later changes. Ask the provider to explain the offered mechanism without inferring it from the screen.
Does the G105 one-day example create a universal retention requirement?
No. The technique describes a temporary cache lasting long enough for successful re-authentication within a single user session and gives one day as an example. Do not convert that example into an equipment specification or the separate inactivity-preservation threshold.
Do these three products have verified recovery portals?
No portal recovery test is reported here. The equipment candidates are based on public manufacturer listings. The quotation must identify any included authenticated web workflow before its continuation behaviour can be assessed.
Final Recommendation
Treat authentication return as the beginning of the recovery check. Compare the original sample entries, inspect the working context, make a later correction and complete the agreed process. Keep the result tied to the identified web activity and version rather than extending it to every machine or portal screen.
Select the vending hardware on confirmed merchandise and site fit. For any included authenticated web workflow, require a concrete continuation demonstration and record outstanding gaps. Use W3C’s Level AAA reference and G105 as evidence guides, while leaving implementation, retention governance and other timing requirements within their properly defined scope.
CTA
Tell WEIMI which merchandise and cabinet format you are considering, and identify any authenticated web activities needed by your operators. Include a sample-field list, the interruption condition and the continuation evidence you want at handover. Ask the quotation to distinguish the equipment configuration from the software provider’s responsibilities.
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This is a public-listing shortlist and proposed web-task review. It reports no independent machine test, verified portal recovery, legal determination, customer ROI or search-indexing outcome.
