Shed security

Co-operative Insurance has done one of those weekly survey/info things that go on the news and tell us what we need to know about Garden security, but one of things they are telling you to be aware of is, shed security they suggest which is quite good -

"Try to screen your shed’s windows, so thieves cannot see what is stored in there "

But how would you do this if you have a potting shed and used the window as a sun trap, of course you could cover it up at night, but when on one is there in day (when the best of the sun) then ho hum..