Just be sure that the ability to send pictures will give you an advantage - if you are looking for poachers or live within a few minutes of the ground then it might be useful but for most purposes it is, in my view, not actually something that offers the stalker much practical advantage. The text-to-phone type cameras tend to be very expensive and have a reputation for being tricky to get to work plus they are harder on batteries. For the normal stalker buying 2 or 3 normal cameras and being able to watch deer movement across a larger area will give a clearer picture of what is happening on the ground and having to wait until you are on the ground to check the cameras is no big disadvantage, it just takes away the instant gratification factor.