Byakozwe nuburyo bwihariye kandi bwihariye bwa patenti yihariye, aho kuba muburyo rusange kandi butarinzwe na patenti.Byose bikozwe nibikoresho fatizo byibanze (harimo ariko ntibigarukira gusa: plastike yambere, ibikoresho bya elegitoroniki, ibikoresho bya elegitoronike ya IC) igishushanyo nicyerekana imbaraga zishobora kwerekana ingano yimbaraga, nacyo gifite kwihangana birebire: igihe kirenze iminota 6 yindege kumwanya (Igicuruzwa A kandi hamwe nuburinzi bubiri, ntakibazo cyo kwishyuza birenze).Ingano nto, imbaraga nini, byoroshye gutwara, nimbaraga zihagije.