Nov 9, 2024 #2 renormalize Science Advisor Gold Member Messages 1,178 Reaction score 1,358 It's an RFID label similar to these:
Nov 10, 2024 #3 jtbell Staff Emeritus Science Advisor Homework Helper 2025 Award Messages 16,028 Reaction score 7,868 "Long Distance Passive Alien"... uh-oh!