A receipt proves a payment event, a map may place a device, and a step count describes motion measured by a sensor. The power comes from agreement between independent records, not from pretending any one record is infallible.
Receipt: transaction, not identity
A merchant charge can establish time, amount and account. It may not establish who held the card, whether the purchase was remote or whether the named merchant is the final physical location.
Map: device, estimate and saved places
A map visit can be GPS-derived, Wi-Fi-derived, manually saved or inferred. Check its label and duration. A saved pin is not the same as a visit, and a phone's visit is not automatically its owner's visit.
Health: sensor and source
Step, heart and workout records become stronger when their source device is named. A paired watch continuing to move while a phone stays behind can be decisive—but only after confirming who wore it.
The three-record test
Ask whether all three can be explained by one innocent event. If the receipt, map dwell and wearable motion overlap naturally, they form a strong route. If one belongs to a different device or was generated later, the apparent alibi weakens.
Sources and product pages
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