Quick tutorial: How to set a read/write access password in the MIFARE Ultralight ® EV1. Please read this: https://eccel.co.uk/wp-content/downloads/Set-a-password-in-the-Ultralight-EV1-80B.pdf Protect your data with 4 -bytes read/write password. Use our B1-Client and set the configuration. The B1-Client along with its user guide you can find here: https://eccel.co.uk/support/downloads/#13-56mhz-products
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