My steel cage set of the security alarm as I entered AND left my local Tesco supermarket this morning. Luckily I was not challenged. I've not had this happen before. Does anyone have an explanation?
Probably not the cage. As far as I'm aware I they detect magnetic strip tags or certain radio frequencies. Could you have had a tag somewhere on your person? Maybe in a wallet or in a bag you've used on a previous visit?
A lot for security devices now days are RFID .You sure you didn't have an RFID tag from another store on you? Also maybe your Mistress tagged you .
Metal detectors at Super markets? What has this world come to. You can't even go shopping with your cage on with out setting off alarms. Did you check your pockets. It could have been something in your pocket. ( a hand gun ) just kidding. LOL
"bing bong! This is a customer announcement, there's an unexpected item in the bagging area" As tesco's would say. "every little helps?" Seriously hope it wasn't too embarrassing.
Most metal chastity devices are to my knowledge stainless steel... It is not magnetic. The cause of their alarm and subsequently of yours yours ... is not your chastity device. Also supermarket or store security alarms rely on detecting tags or stickers not all things ferrous.