Fig. 4
From: User-centred participatory design of visual cues for isolation precautions
Existing signage for housekeeping (left) with “patch” to clarify ambiguous mask indication (right). Legend: This “patch” introduced by housekeeping personnel suggests that the existing signage provided ambiguous instructions and that they preferred a more simple instruction to don a mask. The patch, indicated with an arrow, reads, “with mask” instead of “surgical mask if necessary”. The existing signage (left) was translated from German to English for publication