Re: [web-nfc] Security implications of multiple tags in close proximity (#548)

Thanks! We will update the security section with this threat and mitigation.

Usually NFC readers can detect multiple tags, but have to create a separate communication session with each of them. However, the way it's exposed to application may depend on the HW/SW and tag tech. Some of the readers may be able to read multiple tags concurrently but then AFAIK they have to implement (low level) anti-collision.

Anyway, even if they appear as concurrent reads to the end user, they must be done in different sessions.

Therefore I expect that Web NFC implementations will get separate NDEF messages in the [reading algorithm](https://w3c.github.io/web-nfc/#the-nfc-reading-algorithm).

We can track the relevant experiences in this issue.

-- 
GitHub Notification of comment by zolkis
Please view or discuss this issue at https://github.com/w3c/web-nfc/issues/548#issuecomment-596721749 using your GitHub account

Received on Monday, 9 March 2020 18:56:56 UTC