Taikai is an open innovation platform with blockchain algorithms that connects companies, start-ups and students.

Taikai works as an online community that allows companies to present challenges. Any registered member may solve the challenges.

In this context, CTT challenged the community to present a mobile solution (smartphone) to get information on the tracking of an item anywhere within the postal circuit, including production and logistics centres or delivery centres. All through the picture of the fluorescent barcode (printed in the Production and Logistics Centres machines), providing the information on the item.