I bought two privacy screens and was very pleased when they arrived. They stayed in place for a while, then gradually moved forward, losing the ability to stay in place. I sent them back because they didn't fit my 23" monitors. Maybe others will have better luck!
π₯οΈ Clear 3M Anti-Glare Filter for 23.6" Widescreen Monitor (AG236W9B)
12 Review
ποΈ Enhanced Eye Protection: 2 Pack 13.3" Laptop Screen Protector - Blue Light Filter, Anti Glare & Blue Light Blocking Screen Protector for All 13.3" 16:9 Laptops (Diagonal Length 13.3", Bezel Not Included)
10 Review
π₯οΈ Optimized 3M Gold Privacy Filter: 13" MacBook Air (GFNAP002)
10 Review
Ovimir Diagonally Measured Computer Privacy Laptop Accessories
10 Review