Police can stop vehicles based on anonymous 911 tips, justices rule

[Massacure]

39. I partially disagree with Scalia on this

I know this isn't going to be a popular stance to take, but I actually disagree partially with Scalia on his dissent.

The assertion that people who call 911 believe they are anonymous is dubious to me. By law, cell service providers are required to be able to triangulate the position of 90% of 911 callers within 300 meters, and 67% of callers within 50 meters. That law was written with the assumption that position information would be triangulated from cell towers in the area. Given the prevalence of GPS technology in phones, I suspect they are even more accurate than that now. Additionally, the difficult of matching billing information with the phone which made the call isn't a tall order either.

If the police had caught up with him and pulled him over right away, that would be a slam dunk case in my mind. Where I tend to agree with Scalia though is that reasonable cause should have evaporated after police tailed him for five minutes without observing a traffic violation.

That's my take anyway.