The Police dont recommend any keysafes, although this is the only one they 'Approve' as far as I know.
https://www.completecareshop.co.uk/household-aids/key-safes/supra-police-approved-keysafe-view-large?gclid=COrAx-qQwssCFe4y0wodmAUPYA
As far as I can see the blind are leading the blind, going by your choice of best answer. How do you propose to fit an electronic door release with fingerprint recognition on an external door and expect it to operate in an environment that it is not meant to be in ?
If you were to seriously consider fitting this, my first thought is ..
When it fails the person who is inside the property is now locked inside the property. The end result is the Police or the fire service are called and the Police will hit the door with a ram and smash the door and the frame. Whereas the fire service will use a prybar and wreck the door and often the frame. I know, because I am the person they would call after the event, to put the door right again. Your insurance wont cover this damage, it will be down to you.
Why not fit the right external keysafe in the first place and save you the cost of a new door and frame ? I have yet to see anyone break open a keysafe with regular tools.
One more point ... when I have to break into a house and there is a keysafe fitted in the doorway .. I ignore the keysafe as I can't get into them without completely wrecking them and doing a fair amount of damage. The easiest way into most houses is through the front door, especially if it is a UPVC door ... even if it's locked.
PS .. I dont just go round breaking into any house .. the Police or Social Services usually give me an address !