Mine was digital and died after about 24 hours, so it wasn't an option to keep it. I took a picture though! Not sure if I would've wanted to keep a stick with my pee on it, though, ha.
Expectant mothers may want to have the camera ready even if they use the standard line test. User Niami said, "the lines from my first son have faded since the test was taken in 1992." Even if that happens, Girl Jen acknowledged the obvious treasure. She commented, "I got my permanent keepsake of that positive pregnancy test about 8 months after I took it."