NFC Tag

[schloempe]

I create an event for specified NFC tag id. But phone will always show "new tag" and Easer does not react. How can I make Easer react for NFC tag?

[renyuneyun]

Hi,
Could you clarify that a bit more (e.g. through screenshots)? I don't quite follow what you say...

One think maybe worth asking: did you added that specific tag to Easer on the page waiting for an NFC tag?

[schloempe]

Yes I add the tag with button DETECT TAG. This works and shows tag id. But if I touch the tag later, only NFC service comes up and say NEW TAG. Your app is not react to the same NFC tag.
How can I add screenshots here?

[schloempe]

[renyuneyun]

Seems you are configuring correct.
Does your NFC tag has data / payload? #92 is related to this.

[schloempe]

Yes, #92 looks similar. But as you can see in my screenshot, I did write text AUDI on this tag. Before I tried an application link. Both is not working well. So I do not understand. I write AUDI in this tag, but Android default NEW TAG DETECTED comes up. Why?

[schloempe]

Do I need special NDEF to launch easer? Perhaps a predefined MIME?

[renyuneyun]

Hi,
Sorry for the long delay.

I don't think you need a special NDEF for the card, at least in theory. But currently, if I understand Android's mechanism and NFC correctly, the NFC Event in Easer works with an NFC tag with an unknown category to Android (e.g. a bank card, a staff/student card, which was not supposed to be read by Android).
(Please do correct me if I'm possibly wrong. This may help me figure out the exact problem.)

IIRC, I think this is due to Android's way of dispatching NFC tag information to apps, and Easer didn't handle this well (i.e. some scanned tags are not catched, because they belong to other categories). I should investigate this more.
As you may already be aware, I'm not an expert on NFC-related things (and I'm completely confused what, how and why the different "technologies" are there). So this may take longer than expected...

[schloempe]

Hi,
I checked it right now. I test with my bank card and it is working fine. But my NFC21 tokens will always come up with "New Task …" So it depends on tokens you are using. But if I want to buy new tokens, what I have to care about? No idea.
Thank you for your time to check and the hint to test other devices.
Nevertheless, if you have a solution or you find a way, I will be thankful if you could write it here.
Have a good time and thanks for developing easer

[ploth]

Same here, "new tag collected" always pops up. easer doesn't react to the tag.

[1e-9]

Hi.

Same problem with NFC-tags:
A tag with ISO-14443-4 works.
These do not work: ISO 14443-3A
(
I bought this ones:
https://www.nfc-tag-shop.de/en/nfc-sticker/black-white-nfc-tags/111/nfc-sticker-20-x-15-mm-ntag-213-180-byte-white
https://www.nfc-tag-shop.de/en/nfc-keyfobs/nfc-keys-pvc/325/nfc-keyfob-30-mm-ntag-213-180-byte-black
)

Works:

Doesnt work:

[ildar]

Play with disabling other apps that handle NFC. Just a wild guess

[renyuneyun]

@1e-9 Thanks for providing more technical info!
Unfortunately I don't currently have much time to learn that thing, so the issue is still postponed...

I'll summarise some information here in case anyone is thinking of help:

• The component (skill) for hendling NFC scanning is in package ryey.easer.skills.event.nfc_tag
• There is an Activity (NfcListenerActivity) which handles the NFC scan event (dispatched by Android). The types of NFC tag technologies it handles are declared in the corresponding activity element in AndroidManifest.xml
• Android classifies different types of NFC tags into different technologies, and handles them in a separate flow (refer to Android dev documentation for NFC)
• My personal feeling is that this Activity should handle more (all) technologies, in the correct way (which I'm not sure how)