5 ms·
Corporate security has something like this as well - there are little button shaped things on the wall everywhere they scan with their device as they make their
by rrauenza 6y ago
Corporate security has something like this as well - there are little button shaped things on the wall everywhere they scan with their device as they make their rounds.
- SllX 6y agoGenerally anywhere with security patrols, even outside some residential buildings and townhouses in San Francisco.
- pbhjpbhj 6y agoI have a NFC app on my phone, read one of those buttons ... they left it unlocked, so I posted a message. Not sure anyone will read it, presumably they just pick up the location ID in an app. I guess someone could just clone the locations and sit in a chair and spoof it. Library books in my area use NFC, the tags weren't locked on the last book I checked. Probably not a security problem (ha!?), but you'd think the possibility of vandalism would cause them to be locked.
- ticviking 6y agoI've often wondered how often NFC is unlocked like that.
- HenryBemis 6y agoI've seen buildings where the buttons are 'burried' in a few mm 'deep' the wall, and painted over so that you don't notice them at all, the wall looks really smooth. The guards know where exactly the spots are, you see them waving their devices in a seemingly flat/blank wall, then the beep sounds, and they walk towards their next 'random' spot.
- xxpor 6y agoYep, those have been in retail stores forever. In the grocery store I worked in it was specifically for making sure there weren't hazards on the floor (like a broken jar that fell from a shelf) that someone could slip on and break their neck. It was required by their insurance.
- j16sdiz 6y agoIt is called "iButton" https://www.amazon.com/dp/B00R3GRBD8/ref=cm_sw_r_cp_apa_glt_fabc_K7RJXGPMP998QBB0GFEZ https://www.amazon.com/dp/B00R3GRBD8/ref=cm_sw_r_cp_apa_glt_...
- dkdk8283 6y agoThat’s a temperature sensor.