A flexible, capacitive touch sensor, and a method of manufacturing a plurality of such touch sensors, are provided. Muting occasions for a given wireless communication network cell may be differentiated from another cell by use of a different muting sequence, a different reference point, or both. The interface unit also includes a cover which is configured to partially enclose the body part, to ensure that electrical communication is established between the contacts and the electrodes, and to facilitate the application of pressure to the body part. Determining a current availability can include accessing a calendar system corresponding to the personal representative to determine whether a scheduling conflict exists.