500M sounds like a lot. It's a gigantic number. But where call records are concerned it's not actually that big. I could pick out 100 mid-sized businesses an

500M sounds like a lot. It's a gigantic number. But where call records are concerned it's not actually that big. I could pick out 100 mid-sized businesses and double that number readily. And that's not even thinking about text messages. 500M text messages. That's like 1 high school.