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Setting off shop alarms

Over the last week or so, every time I enter a shop my Iphone sets off the store security alarms. this happens both entering and leaving the shops.

It's happened in Tesco's and many other stores.

I've tried switching the phone off and it still happens. Has anybody else experienced this?

If not I may need to visit the local apple store.

iPhone 3G, Mac OS X (10.5.6)

Posted on Dec 23, 2008 6:42 AM

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14 replies

Dec 23, 2008 8:23 AM in response to Dynamite DJs

Yes, those are RFID type tags... walk through the magnetic field at the door things and the sensor is energized, radios and sets off the alarm. The counter at checkout is supposed to de-activate them, but with enough folded layers or stacks of clothes, sometimes they stay activated.

You could have them on anything... maybe a case you bought for your phone.

They are generally applied at the factory by the manufacturers these days, so they are everywhere. If one Old Navy has them, then all of them do.

I doubt it is the phone too, as the security systems work on something completely different.

Dec 23, 2008 1:33 PM in response to housegoj

Yes, my phone has set off a couple of alarms, but I assumed it was just radio interference.

One Circuit City guy told me to hold the phone high over my head (out of scanner range). He said it happened occasionally with his iphones, and that is how he determined it was the phone.

Apple hid an externally readable bar code in the iPhone. Who's to say they didn't slip in an rfid chip.

Dec 28, 2008 5:27 PM in response to housegoj

This happens to me as well. My husband just laughs and does not find it annoying; however, I do. I am tired of store folks asking me to check my bag and I now have a habit of taking my phone out of my purse and stating that it is my phone that is setting it off.

I have gone by the AT&T store -- but they are just stupid. They look at me as it I am off another planet.

If you hear how to fix this please post the answer.

Dec 28, 2008 7:52 PM in response to Grumpy Girl

I've never had my iPhone (or any other cellphone for that matter) do this to me but I used to work retail a while ago and random things can set off the sensors. My particular store, Nautica, used a 'sensormatic' sensor system and sometimes cellphones set it off, sometimes other store's sensors would set it off as well. It just requires the certain magnetic/metal combo to be picked up by the receiver that the security system uses I guess.

Now what's really annoying are the people that when the alarm goes off they just stand there in the doorway with a dumb look on their face like they don't know what's going on all while the alarm is still going off because they won't move. I used to have to tell people 10 times over to get away from the door because it was so annoying lol.

Dec 29, 2008 12:50 PM in response to Drewsky87

Now what's really annoying are the people that when the alarm goes off they just stand there in the doorway with a dumb look on their face like they don't know what's going on


They played by the ruled. The came. They Shopped. They paid.

And still your stupid store system called them thieves!

What an incredibly rude way to threat customers. Then to come here and call them annoying is beyond the pale.

Fix your system. When this happens to me I stand there and make the clerk come and check alarm ringing all the while. Its my way of punishing rude shop keepers.

Dec 29, 2008 1:33 PM in response to icebike

icebike wrote:
Now what's really annoying are the people that when the alarm goes off they just stand there in the doorway with a dumb look on their face like they don't know what's going on


They played by the ruled. The came. They Shopped. They paid.

And still your stupid store system called them thieves!

What an incredibly rude way to threat customers. Then to come here and call them annoying is beyond the pale.

Fix your system. When this happens to me I stand there and make the clerk come and check alarm ringing all the while. Its my way of punishing rude shop keepers.


Not that I really care because I haven't worked there in over a year but...

1) Where did we call them thieves.
2) Where did I say I threatened customers.
3) You must be the only person I know of that wants a complete stranger to run up to you and start digging through your personal items while you have a loud noise going off in your ear.

Setting off shop alarms

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