Background
Alton Cannon, who was designated a lifetime Tier III sex offender after a 1998 conviction for first-degree unlawful sexual contact, was convicted in 2025 of two counts of failing to report as a registered sex offender. The Superior Court imposed a suspended prison term and Level II probation, during which the Department of Correction required Cannon to wear a GPS-enabled ankle bracelet.
Cannon sought sentence modification and removal of the bracelet. The Superior Court denied relief, concluding that 11 Del. C. § 4121(u) required GPS monitoring. Although Cannon completed probation while his appeal was pending, the Delaware Supreme Court agreed to decide the appeal under exceptions to the mootness doctrine and appointed amicus counsel to address Cannon’s statutory and constitutional arguments.
The Court’s Holding
The en banc Delaware Supreme Court affirmed. It held that Section 4121(u) unambiguously requires any Tier III sex offender supervised at Level IV, III, II, or I to wear a GPS ankle bracelet as a condition of probation. The provision turns on the offender’s Tier III status and supervision level, not on whether the probation arises from the sex offense that originally triggered registration. The phrase “their probation” therefore was not limited to Cannon’s probation for his 1998 offense.
The court also rejected Cannon’s absurd-results argument and his as-applied Fourth Amendment challenge. Applying the special-needs framework and balancing factors used in Doe v. Coupe, the court concluded that Cannon had a diminished expectation of privacy as both a probationer and a registered sex offender, that GPS monitoring added only a limited intrusion beyond his existing registration and notification obligations, and that Delaware had a legitimate and immediate interest in monitoring a Tier III offender convicted twice of failing to report.
Key Takeaways
- Section 4121(u) requires GPS monitoring whenever a Tier III sex offender is on probation at a covered supervision level, regardless of which offense produced that probation.
- A failure-to-report conviction is not unrelated to sex-offender supervision; it strengthens the State’s interest in monitoring the offender’s location.
- As applied to Cannon, mandatory GPS monitoring was a reasonable search under the Fourth Amendment because the State’s public-safety and anti-recidivism interests outweighed the incremental intrusion on his diminished privacy.
Why It Matters
The decision confirms that Delaware’s GPS-monitoring mandate follows a person’s Tier III status during covered probation, rather than attaching only to the sentence for the underlying sex offense. Tier III registrants placed on probation for later offenses therefore may be required to wear a GPS bracelet even after completing the original sex-offense sentence.
The ruling also applies Delaware’s existing constitutional framework to a registrant whose current probation arose from failure-to-report convictions, holding that those convictions make the government’s monitoring interest more immediate and that the mandate remains constitutional under the circumstances.