Every week a Guardian Money reader submits a question, and it’s up to you to help him or her out – a selection of the best answers will appear in next Saturday’s paper.

This week’s question:

I have seen wallets that claim they can prevent your contactless cards being scanned without you realising it. Should I buy one that offers such RFID blocking? Has anyone actually suffered from their contactless card being “skimmed”, or is it just scaremongering nonsense?

Do you have a problem readers could solve? Email your suggestions to money@theguardian.com or write to us at Money, The Guardian, Kings Place, 90 York Way, London N1 9GU