[3] She left the school after one year to do a four-year apprenticeship with designer Siegfried Odermatt.
[1] Tissi has received numerous awards including first prize and gold medal at the 11th International Poster Biennial in Warsaw 1986, second prize for her design of Swiss banknotes in 1989, and a Swiss Grand Award for Design in 2018.
[3] When she completed her studies in 1958, Swiss designers such as Max Bill, Ernst Keller, Josef Muller-Brockmann were very popular.
[6] Tissi's work first exemplified Swiss Modernism but evolved to a unique post-modern style.
[5] Tissi's designs are characterised by bright colors, geometric shapes, and playfulness.