Warning: This page contains advanced information on stealing wallets. Please do not attempt to use these techniques in real life. Or do. We won't judge.
Always carry a small amount of glue to stick their wallet to your hand for a more convincing "I meant to do that" expression.
Make sure to time your heist with a busy store or a crowded street to minimize suspicion.
Use a convincing backstory, such as "I'm a professional wallet collector" or "I'm a secret agent on a mission."