change date-taken on photos

Question

I want to change "Date Taken" on photo, which I clicked using my Sony Ericsson phone.

I have all 3 systems: Windows, Mac & Linux.

You can suggest me software for any one or all.

Is there any way to do it using Adobe photoshop?

or any batch processing software.

Answer 1

This is stored in the EXIF data of the file. There are EXIF editors for many OSes, start here.

Answer 2

exiftool works pretty well for managing that data.