I don't know if you have the experience of losing your wallet, especially if there are multiple cards in it, dialing to banks after banks and other financial services providers just seems to be maddening work to do. Plus, you don't know what card is in your wallet (or at least all of them), right?

Introducing lost my wallet, an app and telephone service that allows you to group your card(up to eight) like:

Wallet 1:

HSBC 0001

Lyods 2001

Barclays 9999

Others:

revolut 1000

monzo 2010

Which allows you to drag them into wallets and when you lost your wallet, press a button on your to freeze them and report your loss. Or dial to the hotline, which you could register your phone number so it would recognise you automatically plus some automated security questions, and then "press one to report all, two for wallet 1, ...." and to be friendly to elderlies, have the option to go for live agents. The cards would be automatically linked to you via your ssn, id no, NHS no, etc, so you could use the service even without pre registering and one dial would fix it all.

I have thought about the idea being a start-up idea, but it is quite infeasible as you need the bank's corporation and people would be reluctant to pay a subscription fee to have this service as most think they probably won't lose the wallet. However, it could be a policy for say the bank of England, HKMA and other authority that are regulating the card companies. Banks needs to fund their card lost centers. and they cost money. The entity set up by the government bodies could say charge a lump-sum fee per year or per card, like several million a year or $10 per card or something similar. Card brands, while less broad, like you need to dial visa, master, JCB, discover, AMEX and diners' club separately, but that would still be fewer calls and more convenient. And it could be an edge for having a visa if only visa offers this service, the card brand could similarly charge the banks.

If you know people working for those authorities, do pitch it to them, (cite me if you can) if you have any suggestion or criticisms, do leave them. Or we could also try to think of ways to get this heard.