Some cool features are missing from ur phones and tablets that are right there and ready. Here they are:
 

1. Fingertip Recognition
   
   Why will it come?
   Current lock screens on iOS and Android suck. That’s a fact. It is ultimately easy to someone standing near you to see and memorize you typing your passcode or what shape you swipe to unlock your smartphone. But not only that,  also your finger trails will make it almost too easy for someone to guess your passcode. And typing  pass-code over and over again just to unlock the phone is so annoying.
   
   How it will work?
   Traditional way of it will work with a screen asking to put your fingers and hold for couple of seconds.
    
   More interesting approach can be if phone or tablet by default stays unlocked, and only screen will be hid after some inactivity time. 
   When user will start touching the surface, device will automatically track all fingerprints and will keep device unlocked if fingerprints match. If fingerprints will be not recognized - device will lock. This also will protect your device in case some one started to use it right after you left it - and the lock timer is not complete yet. 
    
2. 3D Cameras Driven Gesture Control
   
   Why will it come?
   Some smartphones from HTC and others already are equiped with 3D screens and cameras. The world around us is in 3D, and it is the only natural way for humans to communicate through and control it.
   
   How it will work?
   Your phone will have 3D camera(s)  and a 3D screen. You will be able to communicate with your phone/tablet without touching it. Your mobile device will basically be able to recognize 3D image of yours, and scan 3D models of things around you. 
   
   A great example of such technology is Microsoft Kinect. Imagine how great it will be to play Kinect games on your phone or tablet!
   The new version of Kinect already is precise enough to read your lips. Imagine how the speech recognition will improve with such a technology. 3D camera will track your eyeballs to make your touch and gestures commands extremely precise. Also you will be able to film in 3D!
   
   Apple should be so envious of Microsoft owning such technology as Kinect…
   Here is a good example of technology. just working with gloves: http://bit.ly/JEVewq.
    
3. Eyes Retina Scanning And Face Recognition
   
   Why will it come?
   Cameras are more than photo taking devices, and no wonder they evolve so fast to become more and more precise. This progress can enable a whole new set of functionalities like scanning your face and eye retina for your identification as the owner of the phone. 3D cameras will add up to this to be more realistic. 
   
   How it will work?
   You will move to get your face occurred in camera lens focus zone. Phone will recognize you (via scanning your face and eyes retinas), and expect a touch to unlock. This means that camera will basically work all the time in some kind of suspend mode, waiting for you getting into the picture.
    
4. Pressure Sensitivity
   
   Why will it come?
   Touching is one of natural ways of communication for humans. And the thing is in real life touching includes pressure. Existence of such drawing tablets as Wacom makes the technologie merge inevitable. And this will make so many of my artist friends extremely happy!
   
   How it will work?
   Imagine if your phone and tablet surface was as sensitive for pressure as your Wacom drawing tablet.
   This will evolve user experience in apps to the next level. Also, if technology will be precise enough, it will create a whole new eco-system of customers, accessories and apps.
   Those customers will be anyone who wants to draw (professionals and newbies), those accessories will be pens of different sizes and formats for tablets and phones, and covers designed to hold those pens.
   Those new apps will be all kind of apps letting artists to draw with full artistic pen preciseness (guess Photoshop?).
   
   Every single artist in the world will rush to buy such phone or tablet!