Card Clash Blocker

How can M&S sell something that does not work? I am not stupid and know how to read the instructions. The fact is that this does not protect at all your cards.

Bought for all my friends as they were 3 for 2.; easier to deal with than the expensive wallets; just slip into a purse easily. Many friends were not aware of the risks of contactless cards. A good cheap way to remind them.

These just do not work. Simple as that. I experimented in store holding my card between the two blockers and the payment machine picked my card up no problem. I'm will be returning mine!

I'm not sure why there are so many bad reviews about the instructions.... maybe they've updated them recently, but they definitely say to sandwich your cards with BOTH the cards in the pack. One black one and one white one.... So I did, and I tested it a McDonalds till and unfortunately it went "ping!" ... it charged me. ... So I tried again 20 minutes later on the McFlurry run, and this time I put the cards both front facing outwards (instructions didn't say this was important - I just thought I'd try it) and ... "ping!" again. These blocking cards simply do NOT work. I will try again soon with my payment card being the only card between the blockers, and see if that helps (as opposed to having about 5 cards on these first 2 goes). If that doesn't work then they're going in the bin. For a Fiver it's not worth the time and trouble for me taking them back.

This product is alright if you want to stop two cards from clashing in your wallet.

My mum is 86 and just received her bank card but had no idea she was contact less so I bought these for her to protect her from scams. I then nought some for myself too . Compared to other retailers these are terrific value

I've just bought the M&S Card Clash Blocker, thinking I was getting 2 individual cards. However, the instructions are so poor, neither I nor my partner could make sense of them, so I asked the M&S assistant if I could try it out when paying for a purchase in-store. I placed one of the blockers in front of my contactless card ...and the payment was accepted. Two M&S assistants were unable to explain this or make sense of the instructions and suggested I return the cards if I thought they were faulty. I've just spent about 15 minutes trawling through Google for information on blocker cards before finding this site. I'm relieved to discover so many people of the same opinion, and surprised to find clearer instructions provided next to the online description. These instructions explain that both blocker cards are required to block payment being taken from your credit/debit card - one blocker card in front, and one behind. If only the instructions that came with the cards were as clear! (Although I still feel the final statement that 'block cards do not destroy the function of debit/credit cards' is ambiguous.) P.S. I have to make the point that confusion over these instructions has nothing to do with the age of the purchaser, or how tech-friendly they are.

Bought this a gift for a friend who had worries about card misuse. Instructions for use were poor, vague and after looking at other peoples experiences we weren't the only ones.

I've now read (after I bought this) other people's reviews, & wish I'd done so beforehand!! I don't know aha an RB card is, I don;t know which card goes where, & I don't know whether the two cards are used together, or for two different credit/debit cards. It's going back!

The instructions are totally useless. Two cards in pack but no idea if both are needed or just one. Bought as stocking fillers so a good job we checked them out before wrapping. Disappointing.