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Somebody Should Introduce These Guys to MOSFETs!

Visitor

Well-Known Member
"The Lock Picking Lawyer" makes quick work of picking open most locks. Seriously, don't watch his videos if you ever want to feel safe again.

He's also demonstrated the vulnerability of electronic locks using solenoids and relays. Somebody needs to show these guys how to use MOSFETs.

 

plouf

New Member
the desing of these products are by definition medium security
"high" security product has Central unit's installed inside building (in a secure are)

OUT OF TOPIC how does this magnet with lever/stick called ?
 

rjenkinsgb

Well-Known Member
Most Helpful Member
It's a miniature "Lift magnet"; they (or their big brothers) are commonly used for handling workpieces in machine & fabrication shops etc.

This appears to be the same as in the video, with it's lifting eye attached:

These are the commoner style, capable of lifting up to several tons:
 

unclejed613

Well-Known Member
Most Helpful Member
electronic locks using solenoids and relays.
in a lock you still have to move a mechanism to lock/unlock the door, so that's why the use of solenoids...
 

Visitor

Well-Known Member
in a lock you still have to move a mechanism to lock/unlock the door, so that's why the use of solenoids...

In the case of the video, only a relay contact needed to be closed to open the remote lock. This problem is easily eliminated by using a transistor or MOSFET to operate the remote solenoid. Some locks use a relay to trip an internal solenoid. Two weak spots in that arrangement.

Where a solenoid is used, care in materials selection (e.g., steel surrounding the solenoid) could reduce or eliminate this method of defeating the lock. Alternatively, two solenoids (or a solenoid and a spring-loaded steel lin) might be used, arranged such that moving a magnet releases one as it pulls the other to keep the lock secure.
 

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