A padlock would only allow you to lock a gate from one side whereas something like a key lock, or even a keypad operated lock, would allow you to lock from both sides, whether you were in or out. Locks can be fitted to out-buildings or garages to protect their contents, or even connected up to your burglar alarm. We’d also recommend some motion-triggered security lighting. Other measures could be to keep hedges trimmed (so they don’t conceal any would-be intruder) or a gravel path that would make a noise underfoot. Try not to leave items accessible that can be used to break into the house such as tools, ladders and garden furniture.
[Question posed during National Home Security Month 2015]