Here is a meditation gadget that gives real-time feedback.
One of the biggest difficulties with meditation, from my experience, is that the ‘work’ is all internal and there is no reference point to check how I’m getting along.
HeartMath-InnerBalance is the first portable system I have come across that gives relevant real-time feedback on 'Heart Rate Variability', which is an excellent indicator of emotional stability and mental clarity.
If you’re using meditation techniques to achieve these goals and are into the latest gadgets, it is worth-while checking. It uses a portable finger or ear sensor that is linked by bluetooth to a phone app.
Below is a 2 min explainer video.