Most trail cameras nowadays stamp at least time and date info on the photo, but also provide an option for turning off this feature. In addition to time and date stamp some camera models can also provide moon phase, temperature, barometric pressure readings and very often some sort of camera ID info stamp on pictures.
Whether you need these kinds of features or not is up to you. If you have multiple cameras, then some sort of camera ID info might be handy for tracking. Just remember that you will find basic information like capture time and date by accessing the picture properties on your computer.