Reflective window films provide excellent ‘One Way Vision" in daylight to stop those prying eyes. These films are the ideal choice for commercial buildings if trying to hide an unattractive combination of blinds, curtains and interior furnishings.
Reflective films also provide exceptional heat rejection, which in turn reduces the cost of air conditioning.
Note: Because these films work by reflecting light, it means that they have the reverse effect when it is dark at night or on a late afternoon in the winter. For the same reason these films are not recommended if you are trying to achieve privacy between two internal rooms.
Solar Silver 15 Mirror Reflective Film. Buy it by the metre.