Something as simple as a light switch timer can deter unwanted visitors. Timed lights have existed for some time, however, and may not fool anyone interested enough to observe them for a few nights. A cleverer way to incorporate a timer for lights is via an app; meaning you can alter their schedule on a whim, or better still, turn lights on if you want to check something specific (for example, via your security camera during the night).
You can add a smart bulb to existing ceiling fittings and lamps, the benefit of a smart light bulb being complete control from your phone. Hive dimmable bulbs are a great example of this, placed on any schedule at the touch of a button. Research products like Nest - ideal for switching lights off if you left for work in a hurry.
