Refer to the passage below and then answer the question afterwards in the same language as the passage: Passage: Like traditional physical watermarks, digital watermarks are often only perceptible under certain conditions, i.e. after using some algorithm. Kana digital watermark ichikanganisa chiratidzo chinotakura nenzira yekuti chionekwe nyore nyore, inogona kutariswa seisingashande zvakanyanya zvichienderana nechinangwa chayo.
Chiratidzo