Nov 9, 2024 #2 renormalize Science Advisor Gold Member Messages 1,290 Reaction score 1,496 It's an RFID label similar to these:
Nov 10, 2024 #3 jtbell Staff Emeritus Science Advisor Homework Helper 2025 Award Messages 16,110 Reaction score 8,265 "Long Distance Passive Alien"... uh-oh!