Fig. 1: Schematic of the proposed super-modules and multiplexing process. | npj Flexible Electronics

Fig. 1: Schematic of the proposed super-modules and multiplexing process.

From: Super modules-based active QR codes for smart trackability and IoT: a responsive-banknotes case study

Fig. 1

The QR codes are aggregated into a single one (spatial multiplexing) where the modules fit perfectly one inside the others (s-modules). The QR code contains 3 levels of information due to use of 3 independent inks (colour multiplexing) and shapes, allowing: a public access, read with ambient light, providing information to the user through the applications available at any mobile device and b restricted access with illumination UV/blue LED, read via dedicated applications/devices, that enable the monitoring and security, triggering alerts thought the establishing of an encrypted connection to a server.

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