Sophia Windsor
[ Gearbest Technology News]Recently, a developer demonstrated a prototype of a microcomputer that is truly the size of a credit card. The device is based on ESP32-C3 and integrates a processor, e-ink screen and NFC chip in an area and thickness similar to a credit card.
Picture source network
According to reports, this project is still in the prototype stage, focusing on verifying the hardware integration capabilities under extreme space constraints. The developer said that some trackers or similar products on the market that claim to be “credit card size” are actually still significantly different in thickness and feel from real credit cards, so he tried to make a “smart card” that is as close as possible to a standard credit card in size and thickness.
Judging from public information, this microcomputer is equipped with an ESP32-C3 chip, which can undertake basic computing and control tasks; the electronic ink screen is used to display information; and the NFC function gives it near-field communication capabilities. The developer also disclosed the design ideas and related schematics of the project to facilitate more enthusiasts to refer to or make their own.
In terms of applications, developers have currently put forward several ideas, including as a smart home status panel, a two-factor authentication tool, and a digital card holder that can store tickets and NFC pass information. However, he also said that after this device is made, it is still being explored what scenarios are most suitable for it, and he hopes to get more creative ideas for use.
From the perspective of project positioning, this is more like an experimental work for hardware enthusiasts rather than a mature consumer product. Its significance mainly lies in demonstrating the feasibility of ultra-small computing devices in the form of cards, and also provides new implementation ideas for low-power displays, portable authentication and wallet-type electronic devices.
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