Google is trying to make wearable gadgets and easier to control by adding a minuscule radar system that senses hand gestures. The cnompany also envisions garments made of smart textiles and also announced an add-on digital security system for mobile devices. Google's Advanced Technology and Projects (ATAP) research group shrank a radar system into a package the size of a micro SD card, small enough to fit in a smartwatch. Meet Project Vault, a digital security system that protects the personal information of a phone's owner.

Attached to a smartphone, the small device can can encrypt, or scramble, chat messages from an app and provide extra levels of authentication, so your device knows that you are you. The card has a near-field communication (NFC) chip for communicating with nearby devices and has 4GB of storage. It is compatible with Google's Android software, Windows, and Apple's OS X.

Google plans to first offer the technology to enterprise companies, and move on with a release for consumers in the future.

Regina Dugan, head of ATAP, showed off a security technology that she said may replace passwords and fingerprint sensors on mobile devices. Project Abacus tracks a combination of user interactions identify and authenticate them and unlock devices. It analyzes actions such as the way a user speaks into a phones or the way a user touches the screen to confirm the person’s identity, she said.

ATAP hopes to bring the Project Abacus technology to Android devices and open it to outside developers, to address the security needs of individual apps efficiently.

Project Soli is another initiative based on a tiny radar that beams a signal wide enough to capture hand motions and gestures and turn them into control signals. This means that you may not have to tap touch or swipe on your smarwatch in order to control it. The goal of Project Soli is to create next-generation gesture technology that enables rich interactions with smart devices regardless of screen size to drive applications across wearable, home automation, automotive, industrial and medical markets. The technology will use SiBEAM’s solution, which is able to detect micro-gestures with minimal interference and in very small form factors. At Google I/O in San Francisco show, the first Project Soli proof of concept chip was announced.

SiBEAM’s touchless gesture sensing technology is based on 3D phased array beamforming and mmWave wireless born out of UC Berkeley Labs.

ATAP plans to release the system to developers later in 2015.

ATAP also unveiled an initiative called Project Jacquard that has developed textiles and clothing that can be touched to control connected devices.The special fabric responds to touch and has a tiny grid of sensors woven into it.

Google is partnering with clothing brand Levi's to produce the clothing. The company showed a jacket that can be swiped with a finger to make a call on a nearby smartphone.