最初由 dpff 发布
What kind of application are you using to view pictures and generate thumnails? And what do you mean "every time when we use it" and where do you see the date was added, on screen or printed papers? And what is the format of your original picture? The most possible reason I can think about is the date is in the EXIF part of the picture, and the application you are using extracted the date and put it on the picture.