Dream Lock by Alan Wong - Trick

Effect

A borrowed ring is locked on a 4 digit combination brass lock, the dials are mixed by the magician and the spectator can hold on to the lock while the dials are mixed and spectator can test a few times that the lock cannot be opened. Spectator thought of any 4 digit number and put the numbers on the lock by herself. This proves to be the secret code that opens the lock! Spectator retrieves her ring from the lock in the end. There is no need to force any pre-conditioned numbers such as someone's year of birth, anniversary or birthday.

You can do either of the following:
1. Ask spectator to name ANY 4 digit number
2. Tell the spectator you are going to project the secret 4 digit number to her mind and have the spectator name it.
3. Have 4 different people name a single number each to form a 4 digit number. (This plays big on stage) Whatever numbers the spectators have chosen, they put the numbers and open the lock with their own hands!

Alan Wong:
"I remembered my fascination when I saw the effect of a combination lock that opened on my year of birth. Later I came to notice an enhanced version that opens only on the month and day of your birthday. This further enhanced my interest and become a dream to develop a stronger effect with the combination lock possibilities where you are not limited to dates and years but open with any numbers named without any force and presetting work. After more than a year's work, I am pleased to present you here my idea realized of such desired effect, the Dream Lock."

Important points:

Work is pure mechanical, nothing will break

Nothing to add or taken away

No electronics parts, no remote control

No magnets, no PK rings

No threads, no wires

No buttons, no switches

No gravity switch, no directional limit

No timers

No years, no birthdays (not limit to these although you can use these numbers)

Lock can be in spectator's hand from the beginning to end of performance

Reset in 2 seconds and right under the nose of a spectator

Any 4 digit number can be named. Absolutely no force.

Remember this: Spectators set the chosen numbers on the lock. They open it themselves!