View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0008349 | Taler | wallet (Android App) | public | 2024-02-07 21:35 | 2024-02-07 22:06 |
| Reporter | avalos | Assigned To | avalos | ||
| Priority | normal | Severity | feature | Reproducibility | always |
| Status | assigned | Resolution | open | ||
| Platform | arm64 | OS | LineageOS | OS Version | 18.1 |
| Product Version | git (master) | ||||
| Target Version | post-1.0 | ||||
| Summary | 0008349: App not reading an NFC tag when screen is locked | ||||
| Description | When the screen is locked, the Android app (or the phone?) fails to read a NPX MiFarre Ultralight C tag programmed with a taler://pay/ URI, even when the phone (Christian's Pixel 4a) is configured to read NFC tags when locked. Reading the payment URI only works when the phone is unlocked, in which case the user is prompted to select an app to handle the URI, this despite the fact that the Taler wallet is the only app registered to handle taler:// URIs, so the phone shouldn't require any user action. | ||||
| Steps To Reproduce | 1. Lock screen. 2. Approach NFC tag. 3. Nothing happens. 1. Unlock screen. 2. Approach NFC tag again. 2. Select Taler wallet app (the only one in the list). 3. Confirm payment in Taler wallet. | ||||
| Additional Information | Initially reported by Christian via Mattermost. | ||||
| Tags | nfc | ||||
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On an iPhone, you need to wake up the screen for iOS to switch on the NFC chip in reader mode. But unlocking is not necessary: the notification >>>NFC Tag Detected - Open "taler" link<<< is shown (hiding the information that "Taler Wallet" or any other app that knows TalerURIs is installed when the iPhone is locked). Apple is quite good with privacy... If you unlock the iPhone first and then scan the tag, the notification reads >>>Taler Wallet NFC Tag - Open in Taler Wallet<<<. I didn't write a single line of code for NFC - all I did was register the "taler"-scheme for the Taler Wallet app. The above behaviour is standard iOS - and even if I wanted I couldn't change it. Note however, that if I install a second app that knows TalerURIs (e.g. "GNU Taler"), iOS does NOT present a list of all applications which can deal with TalerURIs when you scan the tag, but only asks for one of them (maybe the last one you installed?). If you happen to want to open the TalerURI with a different app you cannot do this - it's either the app iOS selected or none. Bummer... |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2024-02-07 21:35 | avalos | New Issue | |
| 2024-02-07 21:35 | avalos | Status | new => assigned |
| 2024-02-07 21:35 | avalos | Assigned To | => avalos |
| 2024-02-07 21:35 | avalos | Tag Attached: nfc | |
| 2024-02-07 21:52 | Christian Grothoff | Severity | minor => feature |
| 2024-02-07 21:52 | Christian Grothoff | Target Version | git (master) => post-1.0 |
| 2024-02-07 22:06 | MarcS | Note Added: 0021200 |
