We use this approach of video heartbeat detection on a real product (recruiting tool) but not for my hack ADHD device,
You can't really do video detection it in real time and properly, without overheating the cheap device. On the SaaS we did we use a recorded segment of video so we can analyse it afterwards, check the colour changes in the face of the subject and try estimate heartbeat with loose accuracy. More like high, Normal, Low after taking a few seconds as base.
The idea of the ADHD device was just a cheap hack done in a day for myself.
Not a product or commercial as I don't feel claiming it can do to others what I looks like does to me.
I'm definitely NOT attending an interview where this kind of tech is used. My heart rate is irrelevant to whether someone should hire me - and I say that as someone who doesn't even get anxious or nervous during interviews.
Not for interviews, video-applications, is used to sense stress and give extra points (not deducting them) if a person is indeed just too shy of being on video vs talking about something ; )
We use on video-applications when pre processing them, the idea is to sense stress levels when the applicant is introducing themselves at the start of the video and then not reducing their scores or points when the same person gets shy of being on video or forget something due to stress when talking about something else.
We try estimate a "confidence" level when saying something, but NOT able to guess if a lie. An actor can easily have full confidence in a script, but still be a lie.
We intended for roles that are client facing and where personal skills are key. Things like retail, costumer service, sales.... not technically or education based, temporary work and alike. Not that Orwellian yet ; )
Example: You need 40 people for an event to work a few hours as guides or hosts, from 100 applying the system can suggest a score and list them all in order so you can start watching or calling for interviews from somewhere.
You can't really do video detection it in real time and properly, without overheating the cheap device. On the SaaS we did we use a recorded segment of video so we can analyse it afterwards, check the colour changes in the face of the subject and try estimate heartbeat with loose accuracy. More like high, Normal, Low after taking a few seconds as base.
The idea of the ADHD device was just a cheap hack done in a day for myself.
Not a product or commercial as I don't feel claiming it can do to others what I looks like does to me.
Happy to share here FREE ; )