I have a home electronic lockset with ATMEGA88v 10AU 1209 . I wish to read what is written in the program. Is it possible to remove it and read it?
You may be able to read the binary version of the program but that will not be the source code for the program such as you would see in the IDE.
See the datasheet: http://www.atmel.com/Images/Atmel-2545-8-bit-AVR-Microcontroller-ATmega48-88-168_Datasheet.pdf
If the maker of the device doesn't want anyone to read their binary code they would just clear some lock bits (see page 364). Once they do that the only operation you can do on the memory is Chip Erase. If serial programming is disabled you would have to use a parallel programmer.