eBeam Smartmarker Complete – Interactive Digital Whiteboard – No Special Markers – Portable – Create a Digital Copy of your Whiteboard Notes – Comes with 4 Digital Markers: Black, Blue, Red, and Green

These are great! I do tech at a college, these are great for lecture capture, meetings, etc.

Great product and reliable, very good for conference meetings and if you need to record the screen, one downside for the product is that it does not have the ability to record the sound by using the sensor, I know it's not the idea of the product but it leads to the problem that I need to sync between the sound and the video. But again the product works great and doing everything it supposed to do. if you need a reliable solution this is it. But please note that while it's not clear whether the same sensor can work with the electronic pen that the company sell, it's very likely to do so.