Yanayin aikace-aikacen alamun abin tunawa:
Alamun abubuwan tunawa yanzu suna taka muhimmiyar rawa a wurare daban-daban na kasuwanci a matsayin kayan aikin jagora a wasu sanannun wurare.
Rayuwar sabis na alamun abin tunawa:
Alamun abubuwan tunawa suna da matuƙar ɗorewa, galibi suna dawwama shekaru da yawa ko ma ƙarni.
Girman Alamar Abin tunawa:
Tsayin alamomin abin tunawa na iya zama aƙalla inci 30, kuma wasu alamomi na musamman na iya wuce inci 100 tsayi, ya danganta da lokacin da aka yi amfani da su.
Kayayyakin don alamun abin tunawa:
Zaɓin kayan don alamun abubuwan tunawa daban-daban, tare da ƙarfe mai nauyi ko marmara kasancewar kayan gama gari.Ƙara wasu kayan taimako zuwa saman m kayan zai iya haifar da kyawawan haruffa ko tasirin kallo.