"The SCRAM program enables community members to voluntarily identify and register their residential video surveillance equipment through a simple, secure, confidential, online form. " It has not been extended to commercial businesses. A wide ranging effort to provide registration and monitoring of home security and systems. "Security camera registration and monitoring is a community based crime prevention opportunity and investigative tool that enlists the help of residents and can help prevent crime on three levels. Residential video surveillance cameras can deter criminals from entering the area, can prevent crimes from occurring and help solve crimes by providing valuable evidence to the police. "Material collected by surveillance cameras has been used as a tool in post event forensics to identify tactics, techniques and perpetrators of terrorist attacks. It has been argued that terrorists won't be deterred by cameras, that terror attacks aren't really the subject of the current use of video surveillance and that terrorists might even see it as an extra channel for propaganda and publication of their acts. In Germany calls for extended video surveillance by the country's main political parties, SPD, CDU and CSU have been dismissed as "little more than a placebo for a subjective feeling of security". Proponents of CCTV cameras argue that cameras are effective at deterring and solving crime, and that appropriate regulation and legal restrictions on surveillance of public spaces can provide sufficient protections so that an individual's right to privacy can reasonably be weighed against the benefits of surveillance. However, anti surveillance activists have held that there is a right to privacy in public areas. Furthermore, while it is true that there may be scenarios wherein a person's right to public privacy can be both reasonably and justifiably compromised, some scholars have argued that such situations are so rare as to not sufficiently warrant the frequent compromising of public privacy rights that occurs in regions with widespread CCTV surveillance.