The alcohol monitoring bracelet, and what it actually costs
Most questions about this device are about money, and for once the money is published rather than quoted. South Dakota prints its rates in the agreement the participant signs, down to what a damaged bracelet costs to replace.
It measures alcohol through the skin, every half hour
A transdermal bracelet tests the vapor that passes through the skin rather than the breath, automatically and around the clock — the Illinois client guide describes testing every 30 minutes. Results are stored and transmitted daily through a base station at home, and the same device records attempts to tamper with it or to block contact with the skin.
Source: South Dakota Attorney General, 24/7 Sobriety Program agreement, checked 2026-08-30
The interlock watches the car, the bracelet watches you
An ignition interlock stops a vehicle from starting and does nothing when you are not driving. Continuous monitoring is the opposite: it says nothing about your car and everything about whether you drank at all, which is why courts use it to enforce total abstinence during bail, probation or a repeat-offender program rather than as a condition of driving.
What the bracelet costs in a state that publishes it
These are South Dakota’s figures for its 24/7 Sobriety Program. Other programs differ, but the structure — a daily fee paid in advance, plus fitting, removal and liability for damage — is the same almost everywhere.
| Item | Amount | Detail |
|---|---|---|
| Daily testing and participation | $6.00 a day | $5 for testing and $1 for participation — about $180 a month, paid in advance |
| Installation | $40 | One-off, at fitting |
| Deactivation | $40 | Charged again when the bracelet comes off |
| Replacing a damaged bracelet | $1,200 | Full replacement cost if it is lost or damaged beyond normal use |
| Repair after submersion | $340 | Showers are allowed; baths and swimming are not |
Source: South Dakota Attorney General, 24/7 Sobriety Program participation agreement, checked 2026-08-30. Fees are payable in advance, and falling behind is itself reported to the court.
Why a court orders monitoring instead of the device
Continuous monitoring answers a different question than an interlock does. The interlock asks whether you are sober at the moment of starting a car; the bracelet asks whether you are drinking at all. That makes it the tool of choice for bail conditions, for probation with an abstinence requirement, and for repeat-offender programs where the concern is the drinking rather than the driving.
Two states lean on this instead of the interlock as their primary instrument. Both Dakotas run 24/7 Sobriety programs built around testing twice a day or continuous monitoring, which is why advice written for the rest of the country fits them badly.
Monitoring questions
How much does an ankle monitor cost per month?
South Dakota publishes its figures: $6.00 a day in total — $5 for testing and $1 for participation — which works out at roughly $180 a month, paid in advance. Fitting costs $40 and removal another $40. Other programs set their own rates, but this is the shape of the bill.
How does an alcohol monitoring bracelet work?
It measures ethanol in the vapor that passes through your skin rather than in your breath, automatically and around the clock — the Illinois client guide describes a test every 30 minutes. Readings are stored and sent daily through a base station at home, and the device separately records tampering or anything placed between it and your leg.
What is the difference between an ankle monitor and an ignition interlock?
The interlock watches the car and does nothing when you are not driving. The bracelet watches you and says nothing about your vehicle. Courts order continuous monitoring to enforce abstinence during bail, probation or a repeat-offender program, not as a condition of driving.
Can you shower with an alcohol monitoring bracelet?
Showering is allowed — the bracelet is water resistant. Submerging it is not: no baths, no swimming. South Dakota charges $340 to repair a device damaged by submersion, and $1,200 if it has to be replaced outright.
What happens if you drink while wearing one?
The device records a positive reading and transmits an alert. In South Dakota’s program a violation can mean being taken into custody and held without bond until a judge reviews it — the monitoring exists precisely so that a breach is documented rather than argued about.
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