A Bump key is a method of picking a lock. It is basically a key with that has been filed down to
Step 1: Materials
1 Round File
Step 2: Filing the key
Notice where the bumps are on the key. File all of the bumps down so they are equal heights. Also file between the bumps.
Step 3: Using a Bump key
To use your bump key, look at the Scam School video on YouTube. Be Responsible!