Topping tech headlines on Thursday, New York State Attorney General Eric Schneiderman and San Francisco District Attorney George Gascón are teamed up with various state and local officials for a “secure our smartphone” (S.O.S.) initiative.

The coalition is poised to analyze the trends associated with gadget thefts, investigate the possibility of a “kill switch” for stolen devices, and study how device theft impacts phone makers’ decisions. The announcement came as Schneiderman and Gascón met with representatives from Apple, Motorola, Samsung, and Microsoft Thursday in New York for a “summit” on smartphone safety.

In other news, Foursquare users can now “re-live” their old check-ins with the new Time Machine feature. The function lets users visualize all of their past check-ins and discover new places. Take a walk down memory lane by clicking through all of your check-ins — from your first Foursquare mayorship to those late-night bar check-ins, and back; press play to view a time-lapse sequence of the places you’ve been. Foursquare even provides a custom infographic with stats about your visits, shareable on Facebook and Twitter.

Meanwhile, the U.S. Navy has stopped yelling and dropped its all-caps policy. Historically, Navy messages have been formatted in capital letters, but officials are now allows for upper- and lowercase letters. Why the sudden change of heart? According to the Navy, lowercame messages provide a more readable format, and is more in line with “Web 3.0” technologies. The Navy is actually developing a new messaging system called Command and Control Office Information Exchange (C2OIX), scheduled to go live in August.

Also making headlines Thursday:

• Rugged Galaxy S4 Active Coming to AT&T: Samsung announced that its new rugged Galaxy S4 Active smartphone will be sold exclusively via AT&T in the U.S.
• Yahoo Continues Buying Spree, Grabbing Rondee, GhostBird: After its $1.1 billion acquisition of Tumblr last month, Yahoo this week continued its buying spree, picking up two additional startups.
• iBooks Captures More of E-Book Market Than Expected: Apple’s e-book price fixing trial is still in progress, but a new set of questions revealed exactly how successful iBooks has been for the company.
• WhatsApp Scores New Record With 27B Messages in One Day: WhastsApp, the mobile messaging app that lets you text without having to pay for SMS, announced a huge milestone on Thursday.
• Bring Your Twitter Feed to Life With Vizify #FollowMe: Vizify is once again helping you visualize your life online, this time allowing Twitter users to combine their tweets, photos, and Vines into one, music-enhanced mashup.
• Best Buy Adding Microsoft Mini Stores at 600 Locations: Microsoft has teamed up with Best Buy to bring the Microsoft Store experience to the big box retailer.
• Rovio Teases New ‘Angry Birds Go’ Game: The Finnish game maker remains tight-lipped about its new game, Angry Birds Go!
• Myspace Exits Beta, Launches iOS App: One of the original social networks, the new Myspace emerged from beta and released an iOS app for on-the-go users.
• IBM Cuts More Than 1,600 U.S. Jobs: IBM laid off more than 1,600 U.S. workers in a new round of job cuts that began on Wednesday.
• Is Anyone Clicking on Your Twitter Links? Now You Can Find Out: Twitter has quietly opened up its analytics tool to average users.
• In the Future, Humans Will Look Like Badly Photoshopped Lemurs: A pair of futurists mapped out the possible evolution of the human face over the next 100,000 years, with startling results.
• Sony Opens SmartWatch to Developers: While Pebble and Apple’s rumored iWatch are getting all the attention these days, Sony is looking to bring its own SmartWatch gadget back in the spotlight.
• Synced Notifications Rolling Out for Google+: Google is rolling out synced notifications for Google+, meaning you’ll only have to dismiss a notification once and it will clear across all your gadgets.