The booth area needs to be equipped with the electrical and network connections for computerized data collection. Although sinks were installed in many sensory booth areas for many years, the use of sinks is no longer encouraged. Sinks are now thought of as a major source of odor contamination Disposable personal spittoons provide a sanitary alternative. The use of signal lights to inform servers that the panelists are in the booth area, to signal the need for a sample, or to request for help minimizes panelist interaction with the servers. When the signal light system is not avail able, a colored card can be slipped under the hatch door to gain attention from sample servers.