Generally, in accordance with various exemplary embodiments of the present invention, the present method comprises collecting data from breath alcohol ignition interlock devices (“BIID” or “IID”), uploading the data from an IID to a central database, pairing the data with secure transactional data to provide one or more secure transactional stamp(s), storing the data and the paired secure transactional stamp(s) in said central database, producing a report comprising said data and the paired transactional stamp, and providing the report to an authorized third party. Preferably, the transactional stamp comprising the name of personnel, time, and any changes made to the data collected from the IID is generated and attached to the data. Further, the present invention discloses methods for transactional stamping all reviews of the IID data and/or all client input data to produce a secure report, admissible under the Federal Rules of Evidence.