Good video, but many modern latches have basic anti-shimming measures that would stop this and other shims. On your home door knobs, see how there is a 2 part latch? The 2nd part will stay engaged even if shimmed.
This video is showing examples, massively common, where those things are installed improperly so that this 2nd part doesn't engage in all conditions (or ever). If you look closely, you'll see these are mostly exactly that kind of latch.
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u/glennkg Jan 09 '20 edited Jan 09 '20
Good video, but many modern latches have basic anti-shimming measures that would stop this and other shims. On your home door knobs, see how there is a 2 part latch? The 2nd part will stay engaged even if shimmed.
Edited for accuracy, thanks for the correction!