Is it possible to maintain a record of all the devices that connect to my router?

Total noob in networking here.

I wanna make sure I know who logs onto my router (and preferably when), and save it in a file, for security reasons. I know I can look at the currently connected devices MAC addresses in the router menu, but is there a way to automatically collect this data and maintain a record of it? With some program maybe?

Sorry if I violated sub's rules.