Unicode Watermarking
by Homoglyph Substitution

Our text watermarking app is based on homoglyph characters substitution for latin symbols. The proposed method is able to efficiently embed a password based watermark in short texts by strictly preserving the content. In particular, it uses alternative Unicode symbols to ensure visual indistinguishability and length preservation, namely content-preservation.

S. G. Rizzo, F. Bertini and D. Montesi, Content-preserving Text Watermarking through Unicode Homoglyph Substitution. IDEAS 2016