We recommend that you read the FrontlineSMS User Guide on Data Integrity. Since there is an increasing number of users who transmit confidential information using SMS, questions of data quality and integrity are more important than ever. This guide addresses the resulting data integrity considerations of confidentiality, authenticity, availability and usability of information transmitted using FrontlineSMS and is intended for FrontlineSMS users who design, implement and monitor their programs with data integrity concerns in mind.