In fact, there is the Non-contact (no-touch) measuring fortunately not so complicated is.
All No-Touch (non-contact) measurements that I've tried have an acceptable, repeatable values result, which unfortunately I was able to verify only with a contact thermometer (better would have been an ear thermometer.)
The measurement process sounds complicated, but is quite intuitive to implement in reality.
Measuring with touch (touch) goes well and is sympathetic to me after these first tests. Again, there are precise, credible, repeatable results.
++++ Maybe it's only a matter of trust, because faster Contactless measurement goes well. ++++
The device itself makes a very well-made, high-quality impression. It is powered by AA batteries which are included. It is advisable to keep the device in a bag so that you can keep with the device's (handy) instructions directly.