An alcohol ankle monitor—also known as a SCRAM (Secure Continuous Remote Alcohol Monitor)—is an ankle bracelet consisting of two small boxes secured by a strap and worn 24 hours a day. A SCRAM monitors perspiration on the skin for alcohol content—similar to the way a breathalyzer test measures blood alcohol concentration. A SCRAM is tamper-resistant and if a person attempts to remove or tamper with it, the tampering will be detected and reported through the remote monitoring service.

A person who is out of jail on bond awaiting a DUI/DWI trial may be ordered to wear a SCRAM. And a person who has been convicted of a DUI/DWI criminal offense may be ordered to wear a SCRAM for some period of time—as a condition of probation, for example. A person convicted of a DUI/DWI criminal offense may also volunteer to wear a SCRAM in an effort to reduce the severity of the sentence.

In Missouri, a SCRAM (Secure Continuous Remote Alcohol Monitor) device may be used as a condition of bond or probation for individuals charged with or convicted of DUI/DWI offenses. The courts have the authority to order the use of SCRAM as a monitoring tool to ensure that the individual abstains from alcohol consumption. If ordered as a condition of bond, the SCRAM device helps to monitor the individual's compliance with court-ordered abstinence while they await trial. For those convicted of DUI/DWI, wearing a SCRAM device may be mandated as part of their probation requirements. Additionally, individuals may voluntarily choose to wear a SCRAM device to demonstrate their commitment to sobriety and potentially mitigate the severity of their sentence. Tampering with or attempting to remove the SCRAM device is considered a violation and will be reported, which can result in legal consequences such as revocation of bond or probation.