Deer-fencing that sounds like it actually works

Heard about this from Tom Bartels, a gardener that has amazingly lush, full vegetable gardens in Colorado. He talks about making a lower cost, deer-proof fence from 4ft. fencing, then adding a couple of lines of braided wire lines above the 4 ft- fencing, at around 5 ft. and 7 ft., with a couple of things tied to them so the deer can see the wires above the 4 ft. fence, then, very importantly, putting in a psychological barrier on the inside, about 2 1/2 -3 feet in from the outside fence, at a 4-5 ft. height. He uses white clothes line for the inside "fence" that is tied to t-posts on each corner. He's had 100% success with this type of fencing for 8 years now. Here is a link to the page on his site explaining it along with a video:
https://growfoodwell.com/build-a-deer-fence/

Horse sighter wire may be easier to buy.
Its white fencing wire.

Annie, I think that would work.  Deer can jump high and narrow, but they can't jump wide at the 4 foot level, and that white inner string would stop them.

I have a small garden with a 4-foot fence, waist height, that winds around in narrow patterns with the fencing about 6-7 feet  apart, (2+ meters,)  and they don't jump into it.  There are large plants in it, so there's even less room than when it was new.   They also are not interested in the plants....so far....but it's been years, and they do hang out nearby in the spring.

They are smart enough, though, to know that rusted out chicken wire is easily pushed through!

I have more problems with rabbits and packrats, so I turn out the bottom 6 inches (a hand depth) of the chicken wire, and let weeds grow through that to hold it down, mowing out about 6 inches from that.  Then if any of them find a way under it, there will be a little trail going in and it's easily spotted from either side of the fence.