Useful (warning)signals
Whether you want to let people know your dog's name, that your dog is an assistance dog, is in training, is anxious or prefers not to have contact with other dogs - a clear text on the dog leash or collar prevents awkward situations. It can also be nice for you as an owner, if you are less mobile or quickly become overstimulated, if people immediately understand why your dog (and you) need some extra space.
Choose your own text such as; Do not pet / Assistance dog / In training / Keep distance , etc.