Blue barrier film to help reduce the risk of cross-contamination. Sheets of WrapAround provide a mechanical barrier which protects areas which may be exposed during clinical procedures. This film is lightly adhesive and thin, easily applied and removed, and used commonly on light switches, handles of lights, door handles etc.
Blue Wraparound can work in conjunction with clear WrapAround to provide colour-coding. In cases where you don't need to see through clear film, blue may be preferable, in cases where visibility of what has been covered by Wraparound is necessary (I.e. covering keyboards), clear will be better.
Tools, equipment, handles, surfaces, and office equipment such as mice all can cause cross-contamination.