While P2i describes its invisible "hydrophobic layer" as covering the exterior and interior of a product, HzO touts what it calls "WaterBlock" technology, which is applied to the internal circuitry of a device to protect it from moisture.

CNN: Waterproof phones and tablets make a splash

He spent hundreds of millions more on product development, joint ventures and computer systems to layer on and cross-sell new services.

FORBES: After the Bubble

OpenMobile is a new company on the application compatibility scene whose primary product, the Application Compatibility Layer, promises to bring Android's large volume of apps to smaller platforms.

ENGADGET: OpenMobile demos ACL for MeeGo, promises 100 percent compatibility with Android apps (video)

So now, in an agreement with the Consumer Product Safety Commission (CPSC), Bumbo is adding a belt to add an extra layer of safety.

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