216 Cal. App. 4th 1508
Cal. Ct. App.2013Background
- Robbery occurred at night; victim identifies stolen cell phone with GPS capability.
- Police obtained consent from owner to ping the phone via Sprint for location.
- GPS ping indicated phone located near 16th–Mission Street; police pursued the suspect.
- Defendant stopped at 13th–Mission; purse and phone found in his vehicle; gun observed.
- Defendant challenged only the initial stop as unlawful; suppression denied by trial court.
- Court affirmed that GPS use with owner consent did not violate the Fourth Amendment.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether GPS tracking of a stolen phone with owner consent violates the Fourth Amendment | Barnes argues GPS tracking intrudes privacy; Maynard-like concerns. | Barnes contends GPS use without warrant violates privacy. | No Fourth Amendment violation; information was part of reasonable deterring grounds. |
| Whether Katz/trespass analysis governs GPS use here | Maynard-inspired concern about privacy via electronic tracking. | GPS use is not a stark trespass; no expectation of privacy in stolen property. | Katz-based analysis applies; no privacy expectation in stolen property. |
| Whether owner consent offsets defendant’s privacy interest | Consent by owner reduces privacy protection for suspect. | Consent and short duration negate privacy expectations. | Consent and short monitoring do not offend Fourth Amendment. |
| Whether reliability/federal Kelly-Frye issue was preserved | Reliability of pinging not established; Kelly-Frye缺 preservation. | Reliability contested but not preserved due to lack of objection. | Not preserved; Kelly-Frye claim waived. |
| Whether GPS information established reasonable suspicion to detain | Phone location plus victim description supports detention. | Location alone insufficient for stop; mere generic description. | Totality of circumstances supported reasonable suspicion. |
Key Cases Cited
- United States v. Arvizu, 534 U.S. 266 (2002) (reasonable-suspicion standard; totality of circumstances)
- Jones v. United States, 565 U.S. ({}) (2012) (GPS tracking and privacy expectations; trespass/katz framework)
- United States v. Caymen, 404 F.3d 1196 (9th Cir. 2005) (no privacy in contents of stolen property; no Fourth Amendment protection)
- United States v. Skinner, 690 F.3d 772 (6th Cir. 2012) (pinging location could be visual-surveillance equivalent)