Yes you can just mount the connector on the frame - but if you plan on taking the tablet in and out all time then it is a problem with getting correctly aligned without damaging.
Yes you can leave a wireless charger on all the time
If you go for a low end/old tablet then the response time will suffer - it is a trade off, but a browser on a modern tablet is plenty fast enough
Craig
Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
The OpenJS Foundation | Terms of Use | Privacy Policy | OpenJS Foundation Bylaws | Trademark Policy | Trademark List | Cookie Policy