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The "free internet with no mobile data plan" seems a stretch, unless you consider the speed ok.

> Bräunlein reported that he could send at about 20 bits/second and receive at about 25 bits/second, but that his hidden data “messages” took anywhere from a minute to an hour to arrive.

Long live to gopher protocol

The blog post [0] of the researcher - which this article is based on

[0] https://positive.security/blog/send-my

and the HN discussion, making this a dupe: https://news.ycombinator.com/item?id=27130355

Yeah but that's missing the clickbait title.

If you mock up AirTag broadcasts using one and only one of those messages as a public key, and you send it many times to improve its chance of getting through, I can figure out which hidden message you sent by working out the SHA256 hashes of all possible 100 messages…

Would this be the equivalent of using a one time pad?

How does one “..query Apple’s Find My servers for 32 different “public keys”?

Apple AirTag hacked again – free internet with no mobile data plan