ReadWrite’s Michael Singer explains how online payment services are evolving to include mobile wallets that give you unprecedented flexibility when shopping at major retailers and small businesses. Get a walk through on using your mobile phone and PIN – or an associated PayPal card – to pay quickly and conveniently without having to share your financial information with retailers. Plus, learn how to get the deals and discounts you want automatically applied to your account.

It might be time to leave your wallet – and your cash – at home.