Digital calipers show the Spotminders tracking card measures exactly 1.82 mm thick and weighs 14.2 grams. By comparison, an Apple AirTag measures 8.00 mm thick (rising to over 10 mm when seated in most leather wallet sleeves) and weighs 11.1 grams. That 6.18 mm reduction completely transforms daily carry comfort.
When placed into the interior slot of a Bellroy Hide & Seek leather bifold, the Spotminders card settled flush against the fabric lining. There was no visible exterior contouring, and sitting down produced none of the localized pressure points common with an AirTag. In minimalist cardholders like the Ridge Wallet, the card occupied the slot space of exactly two embossed payment cards. For users prioritizing thinness, the credit card form factor eliminates the mechanical strain that makes standard fobs unworkable in pocket carry.
