Sorry...for the keys I got a very small chameleon ultra, fits on a keyring, the pocket toy has been replaced with a M5 cardputer which is better at being a real tool than flipper as it has all the sensor options.

The flipper was still a very nice thing to put in the pocket for along time for sure

Thanks. That's https://lab401.com/products/chameleon-ultra and https://shop.m5stack.com/collections/controllers/CARDPUTER as far as I can tell... I might look into those, especially as my f0 wears out. The f1's feature-set doesn't interest me. Nor does it's price point, which I imagine falls into the "ain't cheap" category.

The chameleon can get a clone one on Ali for much cheaper and depending on the revision better hardware. I like supporting the originals but in this case the difference is pretty big (cost/quality)

Cardputer has a new pi zero variant coming out this month that runs full Linux, half GB Ram only, but should be fun nonetheless

Chameleon claims this on their website about clones:

  Why Clones Underperform

  Stable RFID requires accurate timing and tuned antennas for perfect coupling.
  Cloned devices compete on price. Reducing the price means using lower-quality components (less precise, wider tolerance), which results in poor performance. Likewise, lowering testing standards means a cloning factory has fewer rejects - but customers receive devices of unproven stability and performance.

That's a very nice statement and all. But in my testing their antenna design underperformed the v2 clones. Also the original antenna had low frequency read/write issues with many units.