TESCO Contactless Clubcard
Discussion
Contactless payments/cards use RFID (cards) or NFC (apple-pay, android pay or banking apps that use the phone)
NFC has a range of about 20cm.
RFID used in cards has a range of about 10cm at most. They need to meet ISO/IEC 14443 which specifies the frequency used and thus the range. These are classed as 'priximity cards'
There is another standard for 'vicinity cards' which is what's used in ski-passes for example. These comply with ISO/IEC 15693 and have a range of up to 50cm.
I'm assuming the tesco cards are proximity so, theoretically it's possible to 'track' you in the store, but only if you're less than 10cm away from any sensors.
NFC has a range of about 20cm.
RFID used in cards has a range of about 10cm at most. They need to meet ISO/IEC 14443 which specifies the frequency used and thus the range. These are classed as 'priximity cards'
There is another standard for 'vicinity cards' which is what's used in ski-passes for example. These comply with ISO/IEC 15693 and have a range of up to 50cm.
I'm assuming the tesco cards are proximity so, theoretically it's possible to 'track' you in the store, but only if you're less than 10cm away from any sensors.
To answer the OP, most customer & queue activity monitoring is done by monitoring Bluetooth signals from mobiles. Usually it's anonymous.
Could Tesco tie your clubcard to your bluetooth identifier? Probably, but only if you dwelled long enough at the till to tie the two together. Should they? I think the Information Commissioner would have something to say about that.
Could Tesco tie your clubcard to your bluetooth identifier? Probably, but only if you dwelled long enough at the till to tie the two together. Should they? I think the Information Commissioner would have something to say about that.
Craikeybaby said:
p1doc said:
I too have joint account wife got hers a week before mine so you should have yours by now
I do, although I tent to use the app on my iPhone, rather than carrying an extra card around.thebraketester said:
Craikeybaby said:
p1doc said:
I too have joint account wife got hers a week before mine so you should have yours by now
I do, although I tent to use the app on my iPhone, rather than carrying an extra card around.thebraketester said:
It does... but for some reason (unless they sorted it out) the app looses its account details every time the app updates, and this became a ball ache... easier just to have the photo of the card to hand than to have to piss about logging in etc
Fair enough but I have no such issues with the App.People trying to use these "scan your phone" apps wind me up at work (supermarket petrol station). Our scanners can't read barcodes on phone screens. I have to explain this to the customer, and tell them they will have to read the card number out for me to type in. Annoying waste of time when there's a queue.
We don't have contactless pinpads either. We've put a big sticker saying as much on each pinpad, but customers still stand there tapping their cards, and I have to explain that they will have to use chip&pin.
We don't have contactless pinpads either. We've put a big sticker saying as much on each pinpad, but customers still stand there tapping their cards, and I have to explain that they will have to use chip&pin.
clockworks said:
People trying to use these "scan your phone" apps wind me up at work (supermarket petrol station). Our scanners can't read barcodes on phone screens. I have to explain this to the customer, and tell them they will have to read the card number out for me to type in. Annoying waste of time when there's a queue.
We don't have contactless pinpads either. We've put a big sticker saying as much on each pinpad, but customers still stand there tapping their cards, and I have to explain that they will have to use chip&pin.
I can understand your frustration but it's hardly the customer's fault if your systems are not up to date. We don't have contactless pinpads either. We've put a big sticker saying as much on each pinpad, but customers still stand there tapping their cards, and I have to explain that they will have to use chip&pin.
If you've got a notice up and their not reading it, thenbthat's a totally different matter. I know my local Sainsburys petrol station has a notice up says 'it's not contactless"
p1doc said:
I find contactless useful but pain if you fill up car ie over £30 limit or as I find if use loads of times is rejected and have to use chip and pin, shopkeeper told me normally every 7 times need chip and pin
You can use contactless over £30 with Apple pay on most terminals.Gassing Station | Finance | Top of Page | What's New | My Stuff