A touch system is an above-standard function, but it's definitely worth it. The system enables your doll to react to your touches, Usually it works so that when you touch your dollꞌs breasts or vagina and she begins to moan. If you repeat the touches, she moans more intensively. Some manufacturers also have a sensor inside the vagina, which recognizes thrusting and the doll moans accordingly. Touch sensors adds authenticity to your doll and are definitely worth it.