Table 3. The wording of the 3 hard and 3 soft policy measures.

Preventive Measure	Regulation (hard approach)	Nudge (soft approach)
Hand hygiene	People are not allowed to enter public places without disinfecting hands at the entrance	At the entrance of public places painted footprints on the floor lead to sanitizers with colorful instructions
Social distancing	People are not allowed to enter public places until the number of people is below a limit when the 1.5-meter distance can be guaranteed	In public places stickers on the floor show 1.5-meter distance, to notify about the importance of social distancing
Wearing mask	People are not allowed to enter public places without wearing mask hiding their nose and mouth	At the entrance of public places posters highlight that 9 out of 10 people wear mask to combat with the pandemic