TL;DR: ICE monitors over 180,000 immigrants through SmartLINK, a smartphone app requiring regular check-ins via facial recognition selfies, GPS tracking, and voice recognition. Since 2018, nearly 780,000 people have been enrolled. Private prison company GEO Group profits $4 per person per day, compared to $150/day for physical detention. The app creates what advocates call a "digital prison": constant surveillance, mandatory location services, and biometric data collection with no clear limits on storage or sharing. It's marketed as a humanitarian alternative to detention. It's actually an expansion of ICE's surveillance reach.
How SmartLINK Works
SmartLINK is a mobile app developed by BI Incorporated, a subsidiary of the GEO Group, one of the largest private prison operators in the United States.[1]
Here's what it requires:
- Facial recognition selfies: Regular check-ins require photographing yourself. The app compares your face against stored biometric templates.
- GPS location tracking: Your phone must have location services enabled at all times. ICE can see where you go.
- Voice recognition: Some check-ins require speaking. Your voiceprint becomes another biometric identifier.
- Mandatory compliance: Miss a check-in? Technical glitch? The app reports it. Consequences can include detention.
Immigrants are typically required to check in multiple times per week, sometimes daily. The app claims to only collect location data during check-ins, but it has the technical capability for real-time tracking, and requires location services to run continuously.[2]
The Numbers Are Staggering
779,679
Total immigrants monitored through SmartLINK since 2018 through April 2024[3]
182,009
Currently enrolled in ICE's Alternatives to Detention (ATD) as of November 2025[4]
$4/day
What GEO Group charges per person for SmartLINK monitoring[5]
$150/day
What detention costs. SmartLINK is sold as "cost-effective."[5]
The math is telling: SmartLINK costs 97% less than detention while still capturing biometric data on hundreds of thousands of people. For GEO Group, that's scale over margins. For ICE, that's surveillance expansion disguised as compassion.
Who Makes Money
The GEO Group operates private prisons and detention centers across the United States. Through its subsidiary BI Incorporated, they also run the "alternatives" to those same facilities.[1]
Think about that business model:
- GEO Group runs detention centers where conditions are criticized as inhumane
- Advocates push for "alternatives to detention"
- GEO Group's subsidiary gets the contract for those alternatives
- They profit from both detention AND surveillance
The company wins regardless of policy direction. More detention? Profit. More alternatives? Also profit. The only scenario they lose is actual freedom: no surveillance, no tracking, just release.
What Happens to Your Biometric Data?
Nobody knows. That's the problem.
Advocacy groups have sued ICE for transparency about SmartLINK data practices. Key questions remain unanswered:[2][6]
- How long is facial recognition data stored? No clear policy disclosed
- Who can access it? Other law enforcement? Foreign governments?
- Can it be used for other purposes? Training AI? Commercial sale?
- What happens after case closure? Is data deleted? Ever?
When you take a SmartLINK selfie, your face becomes government data. The lack of transparency about its lifecycle should concern everyone, not just those currently enrolled.
The "Digital Prison" Effect
Immigrants enrolled in SmartLINK describe constant anxiety:[6][7]
- Job interference: Must stop work for check-ins regardless of circumstances
- Technical failures: App glitches cause panic. A failed check-in can mean detention.
- Permanent surveillance feeling: "I never feel free. The government is always watching."
- Family stress: Location tracking affects family members by proxy
The app creates what advocates call a "digital prison": freedom from physical walls but constant psychological constraint. You're not in a cell, but you're never really free.
AI "Hurricane Scores" Predict Flight Risk
ICE doesn't just track location: they use AI to predict behavior. The system includes:[8]
- Hurricane Scores: Algorithm assessing likelihood of compliance violations
- Risk Classification Assessments: Evaluate "flight risk" and "public safety threat"
- Automated escalation: High scores can trigger increased surveillance or detention
Your SmartLINK check-in data feeds these algorithms. Every selfie, every GPS ping, every interaction with the app becomes input for AI predictions about your behavior. The predictions then justify enforcement decisions.
Nobody outside ICE knows exactly how these scores are calculated. The people whose lives depend on them have no visibility into the algorithm determining their fate.
"Alternative" or Expansion?
ICE markets SmartLINK as a humane alternative to detention. The data tells a different story.
Detention numbers haven't significantly decreased while ATD enrollment expands. That suggests SmartLINK isn't replacing detention: it's supplementing it. More people under ICE surveillance than ever before, just through different means.[3]
Real alternatives exist:
- Release on recognizance: Let people attend hearings voluntarily
- Case management: Connect with support services, not surveillance
- Legal representation: Studies show legal counsel dramatically improves court appearance rates
ICE's Case Management Pilot Program (CMPP) tests these service-based approaches. But they're pilots while SmartLINK scales to hundreds of thousands.[9]
What You Can Do
If You're On SmartLINK
Document everything. Keep records of check-ins, glitches, any issues. This becomes evidence if problems arise. Contact an immigration attorney about your rights.
Support Advocacy Organizations
Groups like Detention Watch Network and the National Immigrant Justice Center are fighting for real alternatives to surveillance. They need financial and volunteer support.
Pressure Your Representatives
Demand oversight of ATD programs. Ask what happens to biometric data. Push for funding of case management approaches instead of surveillance expansion.
Understand the Business
GEO Group profits from surveillance. So does BI Incorporated. Follow the money. Support divestment campaigns targeting private prison companies.
The Bigger Picture
SmartLINK normalizes biometric surveillance for vulnerable populations. If ICE can mandate facial recognition selfies for immigrants, what stops other agencies from requiring similar surveillance for:
- People on probation or parole?
- Welfare recipients?
- Students?
- Anyone the government wants to track?
The technology already exists. The precedent is being set. SmartLINK isn't just an immigration tool: it's a template for expanded surveillance of anyone deemed "at risk."
When detention costs $150/day and surveillance costs $4, the economics favor surveillance at scale. Right now, 780,000 people have been subjected to this system. The number will only grow.
References
- Detention Watch Network - Alternatives to Detention
- The Markup - SmartLINK: The Controversial App ICE Uses to Track Immigrants (2022)
- TRAC Reports - ICE Alternatives to Detention Program Data
- TRAC Reports - ATD Enrollment November 2025
- AP News - ICE Tracking App Alternative to Detention
- Project Censored - Private Prisons Expand Digital Surveillance
- TIME - SmartLINK App Raises Privacy Concerns
- Context - ICE Uses AI "Hurricane Scores" for Risk Assessment
- American Immigration Council - Case Management Pilot Program