ALOA Lock Picking and Bypass Techniques 2

Question 1

Impressioning a lock involves which primary process?

Accepted Answer

Filing a blank key based on marks left by binding pins

Answer

Impressioning inserts a blank key, applies tension, and reads the marks left by binding pins to file cuts to the correct depth.

Question 2

What is a plug spinner used for during lock picking?

Accepted Answer

To quickly rotate the plug back past the shear line after over-rotation without re-picking

Answer

A plug spinner allows the locksmith to reverse the plug's rotation when it has been turned too far, avoiding the need to re-pick all pins.

Question 3

Which type of lock is considered most resistant to single-pin picking due to its rotating disk mechanism?

Accepted Answer

Disc detainer lock

Answer

Disc detainer locks use rotating discs rather than pins, making them highly resistant to traditional single-pin picking techniques.

Question 4

What is 'decoding' a lock in the context of bypass techniques?

Accepted Answer

Determining the key bitting without disassembly using a decoder tool or by reading pin positions

Answer

Decoding reads the bitting of a lock by measuring pin heights through the keyway or using a specially designed decoder tool.

Question 5

Which drilling point on a pin tumbler lock cylinder is targeted to destroy the shear line between driver and key pins?

Accepted Answer

The shear line at the top of the plug

Answer

Drilling at the shear line destroys the driver pins, allowing the plug to rotate freely without requiring a key.

ALOA - Associated Locksmiths of America Practice Test