Three emerging Wearable Body Sensor Networks (WBSN) using patch type sensors are examined and compared. Unique WBSN environment issues and techniques to overcome those issues are presented for continuous healthcare applications. The first is the battery powered RF patch sensor WBSN (Type 1); it maximizes user-convenience and is suitable for short-term healthcare. The second is the wirelessly powered patch sensor WBSN (Type 2); the proposed patch adopts Planar Fashionable Circuit Board (P-FCB) for pervasiveness and safety, and a base station controls an array of inductors that automatically configure sensor positions around the body. The Type 2 WBSN fits for long-term healthcare. Finally, a snap fastener patch sensor WBSN (Type 3) is proposed. This is the most secure method among 3. Again, P-FCB increases pervasiveness. A snap fastener provides secure power and data channels between sensors and a base station.