Let me be honest with you here. Locks only keep honest people out.
Most locks have no place in the real security of a site and should always
be augmented where possible. Locks, like CCTV, provide a false sense of
security of the individual and the company.
If you have time, I strongly suggest you take up the hobby of lock picking.
This is often allowed as part of an assessment and is also an
invaluable life skill, as well as a fantastic hobby.
If you do not have the inclination all the time to learn,
there are shortcut methods.
I suggest looking at lock pick guns, bump keys, and comb picks.
These will offer incredibly fast entry to the most common locks
whilst requiring little skill and time to learn.
I would be remiss if I do not mention again that you could be arrested
for carrying tools such as these if you do not have your letter of
authority or no permission to do so. You should also consult your local
laws as some devices are illegal land no letter or contract will prevent
you from being convicted. Padlocks are often used to prevent general
access to specific areas.
There are many ways to bypass a padlock,
such as lock picking and shims. Do not break or render
inoperable any lock that you may encounter