Ok so I received two of my hardbits today. I would like to direct people to the users manual which is located here:
http://www.hardbit.cn/index.php/downloads

As the instructions show you use this device with software installed on another android device. How these two devices communicate are made clear in the users manual if you download the link. All communication is done via QR codes.

The problem I have is this:
1. No way to upload your own private key. You must use the private key that comes with your wallet. This means we need to rely on a third party hardbit.cn to assure us that the private key they generated was either destroyed or is kept somewhere securely.
2. No way to download the private key on the wallet without using their proprietary backup system.
3. No way to via a usb connection transmit data to / from the device.

For these reasons I feel that this product will not suit my needs. I will be returning this device because I need a device that fulfills the following requirements:

1. I have control of the private keys not a third party
2. If something were to happen to my private keys outside of the hardbit device then I can export the keys within the device to my computer in a format that can be loaded into any other bitcoin wallet.
3. USB is used to transmit data to the device to allow for the device to receive private keys generated outside of the device. If those keys are lost usb is used to send private keys within the device to an application running on my computer such as blockchain.info. USB is used to receive payment requests and it is used to send sign transactions to a wallet software such as blockchain.info.

If the above is your expectation also then DO NOT PURCHASE THIS PRODUCT.

Quote from: xu2gang1 on May 12, 2014, 03:06:31 PM

Hi ，I'm the R&D leader for Hardbit.
Thanks everyone for your interest in Hardbit.
We've sent 14 Hardbits out .2 already in costomers' hands.
Currently we are busy working on polishing online side software and user's manual.
So please forgive us on slow response of questions.
I think the user's manual will answer most of your questions.
And, the full techincal white paper is already published in Chinese. The English version is only 1/3 of the whole article. We will transate that in a week.
Here I put some core ideas why we develop this product:
1 To make a solution that is best effort for Bitcoin safety for dummies.
(For experienced IT guys, they really don't need hardware wallet.)
(Don't try to teach dummies how to protect their Bitcoins. The more they know, the more possibility they lose their Bitcoins)
so,,convenience is not taking into consideration. Only safety, safety ,safety
So please don't compare convenience with online wallets. Hardbit will perfectly lose.
2 To make a system that online client and offline client can come from different providers. This system is based on a simple communication protocol. (An open-protocol system is much more powerful than an open-source software), this system will help build the offline payment eco system of Democurrency.
3 The hardware must be affordable and portable, and last but not least, not easily recognized as a Bitcoin wallet.