You could technically just transmit data via RDS, too. Change a letter here and there and nobody would know whether that’s a decoding error or actual ciphertext. (Would need some kind of checksum or so, of course.)
@windytan did a fascinating audio clip highlighting the RDS data stream in a radio recording some while ago:
> As of now, my only way to verify it is by literally ordering a credit card from my UK bank when I'm pretty happy with my debit cards already.
This is not true. On the screen where it wants you to scan a credit card, tap “Enter details manually”. Scroll down. Tap “Try other methods”. And there, you’ll be offered to scan an ID or your driver’s license.
I loved the idea. However, the main issue was that it completely ignored the date.
While it worked fine in Western Europe - as i.Beats were based on the “Biel Mean Time” = GMT+1, people in the US would e.g. wake up at @584 on March 7 and eat dinner @125 on March 8.
Yep, just think of those people in front of you, that pass the same several large signs telling them to make sure that all their liquids are in a 1 litre ziplock bag and have that bag ready for inspection (this is in Europe) … and then doing a surprised Pikachu when the security personell asks them about why their perfume isn’t in said bag. Then starting to repack their hand luggage while the whole queue has to wait and watch.
And you only experience those few people in front of you. The security staff has them all day long.
They didn’t go out of fashion. It’s just that some people emptied them to sell the books on flea markets, sometimes drunk people used those for their “business”; and sometimes, kids set them on fire. And this was just in a rather small town.
@windytan did a fascinating audio clip highlighting the RDS data stream in a radio recording some while ago:
https://soundcloud.com/windytan-1/rds-mixdown
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