This is Android's new 'advanced flow' for sideloading apps without verification, includes one-day waiting period
This is Android's new 'advanced flow' for sideloading apps without verification, includes one-day waiting period
It appears that the “security wait” will be a one time thing when you first allow installing from unverified sources. After enabling it it will remain on indefiniately.
Not quite as bad as I was fearing, but will kinda annoying.