Digit by digit lock: (cont.)
nDigit Entered
n4
n1
n2
n4
n3
n1
n2
n3
n
nDigit Entered
n1
n2
n3
n4
n7
nLock Status
nclosed
nclosed
nclosed
nclosed
nclosed
nclosed
nclosed
nopen
n
nLock Status
nclosed
nclosed
nopen
nopen
nopen