MWC 2015 Day 3: Top 6 Stories

Mobile World Congress 2015 in Barcelona, Spain has proven to be a treasure trove of cool new tech. In just the last 24 hours, our editors and writers on the ground have seen sophisticated smartwatches, intelligent fitness trackers, smartphone software that takes the road less traveled, holograms and a camera designed for taking thermal selfies. And that's just from yesterday (March 3); check out what you missed. Can't wait to see what we'll find today.

Pebble Reveals Time Steel

Hot on the heels of its Pebble Time smartwatch announcement, the wearables company has taken the wraps off the Time Steel. Sporting a slightly upscale, all-metal body, the Time Steel will cost $299. It should offer 10 days of battery life, thanks to a new thicker body. With this new smartwatch release, Pebble is also allowing developers to create their own smart straps for unique added functions.

MORE: Pebble Reveals Time Steel, Lets Developers Create Straps

Sony's SmartEyeglass Apps

The SmartEyeglass wearable isn't new, but its augmented reality apps are. We were excited to check out some of those on display at MWC, such as a workplace program for Virgin Atlantic that allows aircraft workers to report mechanical problems by taking a picture with the glasses. There's also Spotpedia, which uses Bluetooth to provide heads-up data on landmarks in your area. The developer's version of the glasses costs $840, but as this platform expands, it may be worth checking out.

MORE: Sony Shows Off SmartEyeglass Apps for Everyday Life

Acer Liquid Leap+ Activity Tracker

The $88 Acer Liquid Leap+ has jumped into the fitness tracking fray. The dust and water-resistant device tracks steps, distance, calories and sleep, all of which can be seen on the 1-inch OLED touchscreen display. It works with Android, iOS and Windows devices via an app, and we particularly like that it will deliver your phone's notifications to your wrist. Acer's wearable will hit Europe first, later this month.

MORE: Acer's Liquid Leap+ Runs Circles Around Fitbit

Flir One Thermal Imaging Dongle

The new, $349 Flir One smartphone dongle (Android and iPhone) can give you Predator-like thermal vision. It works with the Flir app, which can help you locate cold and hot spots in your home, or even take heat-map images of yourself when you flip the accessory around. Can't wait to see those thermal selfies showing up on Instagram.

MORE: Take Thermal Selfies with Wonderfully Weird Flir

Alcatel Hero 2+ with Cyanogen

Alcatel's partnership with Cyanogen is bearing fruit in the form of the Hero 2+, set for launch in 2015 for $300. The 6-inch phablet is powered by a 2-GHz octa-core Cortex A7 CPU with 2GB of RAM and comes with 16GB of storage. It also sports a stylus and a microSD slot for up to 32GB of extra storage. But the big news is the Cyanogen OS 11, which is based on a modded version of Android 4.4.4 KitKat.

MORE: Alcatel Launches 6-Inch Hero 2+ with Cyanogen OS

Leia 3D Hologram Prototype

Holograms don't need to stay trapped in the realm of concert venues and corporate speeches. Leia wants to bring them to your mobile devices. The company showed off its prototype screen yesterday (March 3). The devices refined LCD releases light in specific directions, streaming different light into each eye to create the 3D effect. We were even able to interact with those images via touch.

MORE: These 3D Holograms Pop, No Dorky Glasses Necessary

Follow Anna Attkisson, Tom's Guide managing editor @akattkisson.  Follow us @TomsGuide, on Facebook.