Great article if you haven't already seen it on TV. NYC and DC will be test platforms soon.
The Personal Localized Alerting Network (PLAN) is a free service offered voluntarily by wireless carriers that will allow customers with specially equipped mobile devices to receive geographically-targeted, text-like messages alerting them to imminent safety threats in their area. Cell phones have to be equipped to receive the messages that will come in three versions: Presidential Alerts, alerts involving imminent threats to safety of life; and Amber Alerts. Carriers can opt out of offering the last two, but must carry the presidential alerts, the spokeswoman said.
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