# Multilevel Authentication using QR code based watermarking with mobile OTP and Hadamard transformation

> Research article (2018 International Conference on Advances in Computing, Communications and Informatics (ICACCI), 2018) · cited 11× · AI/ML

**Wikidata**: [openalex:W2902025334](https://www.wikidata.org/wiki/openalex:W2902025334)  
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