Is your whole family on Verizon? Thanks to the new service, now you can know exactly where your wife is, at any time. Simply sign for the Family Locator service and follow you spouse’s whereabouts. The same works on the other end (to track a husband), too, and probably has its best use for tracking kids.
You can sign-up for the service online, and there are even additional options for smartphone users, though I’m not sure what exactly these include. Afterwards, you can simply see where your loved ones are via web interface.
Finally, you may wonder what else is required and how much the service costs. You should be on a Family SharePlan and be willing to pour out additional (on top of your monthly bill) 10 bucks a month per phone you want tracked…