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flipperdevices
[NFC] Detecting Ultralight will run indefinitely when scanning
Bug - Ultralight script will run in infinite loop when scanning for tag
Steps to reproduce the behavior:
- Switch on
- Select NFC
- Read Card
- More
- Run compatible app
Expected Behavior: Flipper should time out after X seconds if no card detected or return a result
This issue is occurring while reading a hotel key card (Assa Abloy MIFARE Ultralight EV1 tag) https://colnect.com/en/hotel_key_cards/hotel_key_card/67638-Assa_Abloy_-Silver_Letters-_4817692-Assa_Abloy_Manufacturer-Manufacturers
Looks abnormal. Can you also switch "Settings->System->Log Level" to debug and provide console log?
Ultralight cards can protect memory area with password. In this case you have to know password to authenticate to protected memory. This functionality is not implemented in flipper so far. However, I can say that this is the reason why you can't read card if you provide console logs
Here's the console log for this - repeats indefinitely until cancelled:
10970315 [D][NfcWorker]: Found Mifare Ultralight tag. Start reading 10970316 [D][MfUltralight]: Reading version 10970321 [D][MfUltralight]: Reading signature 10970373 [D][FuriHalNfc]: Timeout during data exchange 10970375 [D][MfUltralight]: Failed redaing signature 10970377 [D][MfUltralight]: Reading counters 10970430 [D][FuriHalNfc]: Timeout during data exchange 10970431 [D][MfUltralight]: Failed to read 0 counter 10970433 [D][MfUltralight]: Reading tearing flags 10970486 [D][FuriHalNfc]: Timeout during data exchange 10970490 [D][MfUltralight]: Reading pages 0 - 3 10970542 [D][FuriHalNfc]: Timeout during data exchange 10970544 [D][MfUltralight]: Failed to read pages 0 - 3 10970546 [D][NfcWorker]: Failed reading Mifare Ultralight
Suggest trying to read this with NXP NFC TagInfo to see if there are any specific configurations on the tag. Most notably, whether the entire tag can be read without authenticating.
