Hello, i suggest also to add some tags here like “automatic”, (passive), active (semi-automatic), “portable”, “wearable” … like you did with “Price Range” tag.
This is for better undurstanding what resources person needs to apply to operate software tool or device, whats its “TCO” - a total cost of ownership.
Is it that you wish us to add tags to tools listed in the Quantified Self Guide (this is the Forum)? If so, the best way is to send this request to the e-mail address mentioned at the bottom of the Guide, labs@quantifiedself.com.