xHT HITAG S2048 as pet chip

[Pilgrimsmaster]

Personally, I would go for an xBT
THIS would give you the added benefit of temperature

BUT

They are out of stock

I would also consider an xMagic
Write the T5577 side as FDX-B
Write the MFC1k side as NDEF and write a secret message, or contact details, or cold storage for your Crypto millions

Or just get an xEM and write it like Amal said

AND
Using @LabRat great idea, write a personalized UID

Ace ideas for the KBR1

I was thinking about how the KBR1 returns the UID for computer logins. But what if you can’t use your KBR1 for some reason and have to recall a long series of two character bytes? I thought it would be cool to use a chip with a changeable UID and create passwords with the 6 hex letters, plus 0 for O, 1 for I and 5 for S. Then I used an anagram solver to create 8, 14 and 20 character passwords for the 4, 7 and 10 byte UIDs. I stored the results in a database. Here are three records from that …

OR
with your xHT, you might be able to start your car with your dog