When using a wheelchair it is often impossible for users to lean down and pick something up off the ground. It therefore makes it very difficult for anyone in a wheelchair to independently scoop up and collect dog waste for disposal. This action would require a scooper to function while a person is sitting in a wheelchair (either manual or powered), a means of effective transfer of the waste to a conveniently located waste bag, and the means to place/attach both the scooper and the bag to the wheelchair. 

Your task is to design a device that will allow a wheelchair user to pick up after their dog without hassle. The overall operation should not require a great deal of arm or hand strength. It should also be as universal as possible to be able to be used by many different users. This at the outset is largely a mechanical project but could incorporate battery power if necessary.