linguistic:paraphrasing, structural:expansion, structural:summarization
Law and crime

Text messaging has been a subject of interest for police forces around the world. One of the issues of concern to law enforcement agencies is the use of encrypted text messages. In 2003, a British company developed a program called Fortress SMS which used 128 bit AES encryption to protect SMS messages. Police have also retrieved deleted text messages to aid them in solving crimes. For example, Swedish police retrieved deleted texts from a cult member who claimed she committed a double murder based on forwarded texts she received. Police in Tilburg, Netherlands, started an SMS alert program, in which they would send a message to ask citizens to be vigilant when a burglar was on the loose or a child was missing in their neighbourhood. Several thieves have been caught and children have been found using the SMS Alerts. The service has been expanding to other cities. A Malaysian–Australian company has released a multi-layer SMS security program. Boston police are now turning to text messaging to help stop crime. The Boston Police Department asks citizens to send texts to make anonymous crime tips.

Under some interpretations of sharia law, husbands can divorce their wives by the pronouncement of talaq. In 2003, a court in Malaysia upheld such a divorce pronouncement which was transmitted via SMS.

The Massachusetts Supreme Judicial Court ruled in 2017 that under the state constitution, police require a warrant before obtaining access to text messages without consent.