Hi, It is already there. Press 1 and 3 together to lock and unlock. You may also choose to have it beep or not beep when a locked key is pressed. Very good design, in my opinion. It is simple and works well. -----Original Message----- From: bookport-bounce@xxxxxxxxxxxxx [mailto:bookport-bounce@xxxxxxxxxxxxx] On Behalf Of Robert Clark Sent: Tuesday, March 13, 2007 2:21 PM To: bookport@xxxxxxxxxxxxx Subject: [bookport] Re: bookport 2 Hey, rather than a switich, since you mention bumping the keys inside the case, a better option would be to add a key lock in the firmware. Using a sequence of keys one can lock and unlock the keys. *---* *---* *---* *---* *---* Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well-preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming "WOO HOO - what a ride!" Robert & Dreamer Doll (Guide Dawggie) Newport, Oregon N24C 3G 8/2000 Hookup rclark0276@xxxxxxxxxxx http://webpages.charter.net/dog_guide/ -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.9/719 - Release Date: 3/12/2007 8:41 AM