Coin
Una sola tarjeta que almacenaba todas tus tarjetas de crédito electrónicamente — convertida en obsoleta por Apple Pay y Google Pay antes de poder alcanzar escala.
Error fatal: Built a hardware solution (a consolidated payment card) at the exact moment the market was moving to mobile payments — Apple Pay launched three days after Coin's first major press coverage in November 2014, instantly making the physical card format feel dated.