While employed at Widevantage Inc I had the chance to design and bring to market this product. It is a battery and bluetooth free smart pen that uses the phone/ipads sensors to work and offer a variety of smart features.
I worked with Alibaba suppliers to perfect the finish and work on the unibody design to bring down the weight and cost.
The MotionPen is product in a variation that includes three different finishes.
I also designed the UI for registration the MotionPen app.
The pen is being sold online in Korea and abroad. More details can be found at Widevantage's website:
http://widevantage.com/en/home/
Vendor example:
http://gift.kyobobook.co.kr/ht/product/detail?barcode=2310019454144
It has also gained the KITAS (Korea Accessory show award) and been reviewed by various news outlets.