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