A new system to renew items and issue fines will be introduced to all borough libraries next year.
The measures will start from the Monday, January 7 at all 17 libraries as Enfield Borough Council aims to make sure people are reminded to return their loaned books, DVDs and CDs on time.
People will be able to renew their items online, call the 24-hour renewal service or in person at a library.
Those who have books overdue for between 15 and 50 days will receive a letter reminding them of the outstanding items.
Cases of people with more than £10 or items that have been overdue for more than 64 days will have their details passed to a debt recovery agency.
Councillor Bambos Charalambous said: "We've put in place lots of new systems to make it as easy and convenient as possible for people to renew their library items and there is absolutely no excuse for them coming back late.