using pool after its closed

We have residents using the pool after dark and before dawn. We now have a keypad entry system. I had suggested we also chain the gate,has anyone else done this? What has helped in your communities? We have called the police but they come too late or never show.
Barbara

Kirk,
With our system you enter 4 numbers,it doesn't turn off at a certain time. We can't afford to get another system at this time. Any other suggestions?
thanks
Barbara

At a minimum, install several flood lights that kick on for a sustained time interval when they are triggered by motion. That should certainly bring attention to them if the pool area suddenly lights up. Also, be sure that you have signage -"No trespassing after pool closing". We've had this problem before, where the police refused to act on this because there are no signs.

Yes, the key card systems can track who goes through the gate when. Understand there is a limitation in that it only tracks when people swipe the card. If they follow someone else who has opened up the gate it won't be recorded. (Unless you set the device to be so sensitive as to open when the card is within say five or ten feet.)

With the system where you have the four digit code, there may be a way to turn it off at night relatively cheaply. Most lower end systems work one of two ways. Either the power is normally on to the lock and then released when the code is punched, or the lock is passively on and power releases the lock.

If power releases the lock, then a relay on a timer can be made to disable at night. Otherwise it is a little more tricky in that the relay needs to move to constant power at night.

But the addition of lights is a good idea.

Barbara, for what it's worth, we had trespassing issues at our "lake."

We called the police.

They recommended that we post signs as it would make it easier for them to challenge trespassers.

We did.

They do.