The process was twofold – first, obtaining the thumbprint for the lock (which Kari did by tricking Grant into copying a stack of CDs, thus giving them a copy of the master print) and then devising a method of successfully transcribing the fingerprint to the point that it could be used to bypass the lock. Adam and Jamie used various techniques before finding a technique involving copper-coated circuit boards, acetate, acid washing, and manually amplifying the lines in the fingerprint to their original quality.