MIT Guide to Lock Picking by Ted the Tool - HTML preview

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part

of

the

lo ck

is

called

the

hul

l.

The

rst

pin

touc

hed

by

the

key

is

called

pin

one.

The

remaining

pins

are

num

bered

increasingly

tow

ard

the

rear

of

the

lo ck.

The

prop er

key

lifts

each

pin

pair

until

the

gap

b etw

een

the

key

pin

and

the

driver

pin

reaches

the

she

er

line.

When

all

the

pins

are

in

this

p osition,

the

plug

can

rotate

and

the

lo ck

can

b

e

op

ened.

An

incorrect

key

will

leav

e

some

of

the

pins

protruding

b

et

w

een

the

hull

and

the

plug,

and

these

pins

will

prev

en

t

the

plug

from

rotating.

5

Figure

2.1:

W

orkings

of

pin

tum

bler

lo cks

6

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