Mobile wallet

A mobile wallet is an application on your smartphone that links to your bank account or credit or prepaid card. Instead of entering card details every time, the app stores this information securely, so you pay with a tap, a QR code scan, or a direct transfer from your account.

Mobile wallets vary in what they offer. Some handle only point-of-sale payments, while others enable transfers between people, bill payments, and service purchases. All of this happens through the app itself, without visiting a bank or ATM.

There are two different products behind the one word, and the difference is where your money actually sits. A wallet that passes through to your card stores a stand-in for the card number; the money stays in your bank account and the account's protections stay with it. A stored-value wallet holds a balance of its own — you top it up, and what you then hold is a claim on the company running the app rather than a deposit at a bank. If that company stops paying out, the two situations are not remotely alike.

The stand-in is the part worth understanding, because it is genuinely safer than the card. The app never gives the shop your card number: it hands over a code tied to your device and valid for that payment alone, so a leak at the merchant yields nothing anyone can reuse. Paying by phone is more secure than handing over the plastic, not less, and most people's instinct has this backwards.

What it does not change is the spending. The consistent finding on tap-to-pay is that removing the pause between wanting something and paying for it raises how much people spend, not how carefully they choose. The wallet is a better instrument and a worse brake.

• Check which kind of wallet you are holding. If you topped it up, the balance is a claim on a company; if it draws on your card each time, it is not.
• Not all wallets are equal. Some are tied to a single bank, some work across multiple banks, and some are standalone wallets that do not require a bank account at all.
• Fees vary. Some apps are entirely free, while others charge for transfers or for moving a stored balance back out.
• If you lose your phone you can freeze the wallet immediately through your bank, unlike a physical card which may take longer to block.