Alternatives to Detention: Types, Eligibility, and Monitoring

Alternatives to detention are supervision programs that let someone remain in the community while a criminal or immigration case moves forward, instead of being held in jail or an immigration facility. They range from a simple promise to appear in court, to regular check-ins with a supervising officer, to a smartphone app that verifies your identity with a selfie, to a GPS ankle monitor worn around the clock. Which one applies depends on who is deciding (a federal judge, a state court, or ICE), what you’re charged with or facing, and how an individualized risk assessment comes out.

Pretrial Release in Federal Criminal Cases

Federal law sets a clear order of preference. A judge starts with the least restrictive option: release on personal recognizance (your written promise to return) or an unsecured bond that only requires payment if you fail to appear. Stricter conditions come in only when that won’t reasonably ensure your return to court or the safety of the community.¹

When a plain promise isn’t enough, the available conditions get much more involved. A court can require you to keep a job, follow travel restrictions, observe a curfew, stay away from victims and witnesses, report regularly to a pretrial services officer, submit to drug testing, or wear a location-monitoring device. A judge can also order medical or psychological treatment, including inpatient care for substance dependence. The statute directs the court to pick the combination of conditions that addresses your specific risks without going further than necessary.¹

Pretrial services agencies do the groundwork. Officers investigate your background, verify community ties like employment and family, and give the judge a report before your release hearing. More than 300 local jurisdictions and all 94 federal districts run pretrial services programs. Once you’re out, those officers monitor your compliance and flag any violation to the court.²

Treatment Courts as a Supervised Alternative

Drug courts and mental health courts offer a different track. Instead of standard prosecution and incarceration, eligible defendants agree to enter long-term, court-supervised treatment. The programs are intensive, often lasting a year or more, and the judge stays unusually hands-on, meeting with participants regularly and applying both sanctions for backsliding and incentives for progress. Successful completion can result in dismissed or reduced charges.³

The model has expanded well past its 1989 origin. It now includes DUI courts, family treatment courts, veterans treatment courts, tribal healing-to-wellness courts, and juvenile drug treatment courts.³

Juvenile Alternatives

The juvenile system relies more heavily on community-based alternatives than the adult system, reflecting a stronger focus on rehabilitation. Before a case is adjudicated, options include structured home detention and day-reporting centers, where a young person attends programming during the day and returns home at night. After adjudication, a court may order intensive probation supervision, specialized foster care, or therapeutic residential treatment. Each involves frequent contact with supervision officers and compliance with an individualized plan. Federal grant programs through the Office of Juvenile Justice and Delinquency Prevention fund community-based treatment aimed at keeping youth with substance use or co-occurring mental health conditions out of formal detention.⁴

Immigration Alternatives to Detention (ISAP)

In the immigration system, the main federal program is the Intensive Supervision Appearance Program, usually called ISAP. Adults 18 and older who have been released from DHS custody and are generally in removal proceedings or subject to a final removal order can be enrolled. The program combines case management with monitoring technology to keep track of participants while their immigration cases move forward.⁵

ISAP covers a small share of people in immigration proceedings. Fewer than three percent of individuals on ICE’s non-detained docket are enrolled. Contracted case managers notify ICE of significant developments, including missed court hearings or failed conditions, and ICE officers review each case to adjust the monitoring level as circumstances change.⁶

There is also an Extended Case Management Services track for participants facing significant challenges that call for more support than standard ISAP provides. All participants can search a database of community service providers for resources like food banks and clothing assistance; those in extended case management also get one-on-one time with a case specialist.⁵ Some ICE field offices keep people enrolled in ATD for more than two years on average, though length varies widely by location and case complexity.⁷

Monitoring Tools You May Encounter

The technology used in these programs runs along a spectrum. Assignment depends on your assessed risk, and supervision can be moved up or down as your compliance history develops.

Voice Recognition

At the lighter end, voice recognition systems place computerized random or scheduled calls to an approved location (usually your home) to confirm you’re there. The system matches your voice against a stored biometric sample. It requires a landline and is mainly used to enforce a curfew or residential requirement without a wearable device.⁸

SmartLINK App Check-Ins

In immigration cases, ICE uses a smartphone app called SmartLINK. At designated times, you open the app and submit a selfie, which a facial-matching algorithm compares against your enrollment photos. The National Institute of Standards and Technology tested the algorithm and found a 98.5 percent match rate across 12 million images. When the system flags a potential mismatch, a human reviewer examines the photos before any action is taken.⁹

One detail worth knowing: SmartLINK running on your own phone cannot track your location continuously. Devices issued by the monitoring contractor are technically capable of continuous location tracking, but ICE has not activated that feature for any ISAP participant. Check-in frequency is set case by case.⁹

GPS Ankle Monitoring

GPS monitoring sits at the most restrictive end. A non-removable, waterproof, shock-resistant tracker is attached to your wrist or ankle and worn around the clock. The device uses GPS satellites, cellular towers, and Wi-Fi to pinpoint your location in real time. Supervising authorities use that data to enforce curfews and geographic exclusion zones, and the system sends immediate alerts if the device is tampered with or you enter a prohibited area. You’re responsible for charging the device at least daily.⁸

How Eligibility Is Decided

Whether you end up in an alternative program instead of detention turns on a risk assessment. Judges, pretrial services officers, and immigration officials use structured tools to weigh two core questions: how likely are you to flee, and how much danger do you pose to others? The tools consider objective inputs like the severity of the current charge, prior criminal history, and your track record of showing up to past court dates.

Community ties carry real weight. Verifiable employment, nearby family, and long-term residency all suggest reasons you’d stay put and comply. In immigration cases, officers also consider humanitarian and medical factors, including whether you’re a primary caregiver. The goal is an individualized call: supervision level matched to your specific risk profile, not a one-size answer.⁵ Federal pretrial release follows the same logic by statute, which explicitly directs judges to impose the least restrictive conditions that will address identified risks.¹

What Happens if You Violate Conditions

In the federal criminal system, the most serious violation is failing to show up for court. The penalties scale with the seriousness of your underlying charge:

Most serious felonies (charges carrying 15 or more years): failing to appear can add up to 10 years in prison.
Felonies carrying 5 or more years: up to 5 additional years.
Other felonies: up to 2 additional years.
Misdemeanors: up to 1 additional year.

Any prison sentence imposed for failure to appear runs consecutively, meaning it stacks on top of whatever sentence you receive for the original offense.¹⁰

Short of failing to appear, other violations like missed check-ins, failed drug tests, unauthorized travel, or a new arrest can lead a court to revoke pretrial release and order you detained. Tampering with or removing an electronic monitoring device is a standalone criminal offense in many states, with its own imprisonment term separate from the underlying case. People sometimes misjudge this: cutting off a GPS bracelet doesn’t just look bad at the next hearing. It can be charged as a new felony.

In immigration cases, a violation typically prompts ICE to escalate supervision, potentially moving you from app-based check-ins to GPS ankle monitoring, or to revoke release and return you to detention. Because immigration enforcement is administrative rather than criminal, that process moves quickly and with fewer procedural protections than the criminal system provides.

Cost Compared to Detention

Alternatives are far cheaper than detention. ICE’s own figures put the daily cost of ATD-ISAP at less than $4.20 per participant, while a day in immigration detention runs about $152.⁵ Participants themselves often pay some of the costs in criminal cases. In many jurisdictions, people on electronic monitoring pay daily fees for the equipment, and GPS ankle monitors tend to cost more than simpler check-in systems. Setup fees, daily monitoring charges, and equipment deposits vary by jurisdiction and provider. Courts generally have discretion to waive or reduce fees based on your ability to pay, though not every jurisdiction does so consistently.

Asking to Modify Your Conditions

Conditions aren’t necessarily locked in for the life of your case. In the federal criminal system, you can ask the court to modify your release conditions if circumstances change. Because the statute requires the least restrictive conditions necessary, a strong compliance record over several months gives your attorney a reasonable basis to request that monitoring be dialed back.

In immigration cases, the process has more layers. If you’re in active removal proceedings, an immigration judge can reconsider your supervision conditions on a timely motion. If ICE refuses to adjust conditions, you can appeal to the Board of Immigration Appeals. For people with final removal orders, no formal regulation creates a right to reconsideration before a judge, but ICE’s own policies require regular review of ATD cases to evaluate whether the current supervision level remains appropriate. When informal requests to ICE fail, a federal district court petition is still an option, though a heavier lift.

Document your compliance carefully. Attend every check-in, respond to every app notification, and keep records. That paper trail is your strongest argument the next time you ask for your supervision level to come down.

1
Office of the Law Revision Counsel. 18 USC 3142 – Release or Detention of a Defendant Pending Trial
2
National Institute of Justice. Pretrial Services Programs: Responsibilities and Potential
3
National Treatment Court Resource Center. What Are Drug Courts
4
Office of Juvenile Justice and Delinquency Prevention. OJJDP FY25 Expanding Youth Access to Community-Based Treatment
5
U.S. Immigration and Customs Enforcement. Alternatives to Detention
6
U.S. Immigration and Customs Enforcement. Intensive Supervision Appearance Program Fiscal Years 2017-2020
7
U.S. Immigration and Customs Enforcement. ICE FY2026 Congressional Budget Justification
8
United States Courts. How Location Monitoring Works
9
U.S. Immigration and Customs Enforcement. Alternatives to Detention Frequently Asked Questions
10
Office of the Law Revision Counsel. 18 USC 3146 – Penalty for Failure to Appear