Somebody Should Introduce These Guys to MOSFETs!

[Visitor]

"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]

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]

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:

MLAY 600 Lifting Magnet #8100089

Magswitch MLAY 600 Lifting Magnet #8100089 outperorms other magnetice lifters on thinner materials. Buy welding supplies online at the best prices from Welders Supply.

www.weldersupply.com

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

Liftinggear-shop Lifting magnet with the best price!

Lifting magnet with the best price guaranteed!

www.liftinggear-shop.co.uk

 

[Visitor]

Small versions are also used to hold dial indicators.

 

[unclejed613]

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]

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.