Nov 9, 2024 #2 renormalize Science Advisor Gold Member Messages 1,219 Reaction score 1,415 It's an RFID label similar to these:
Nov 10, 2024 #3 jtbell Staff Emeritus Science Advisor Homework Helper 2025 Award Messages 16,032 Reaction score 7,988 "Long Distance Passive Alien"... uh-oh!