Prototyping an Indoor Navigation App with Off-the-Shelf Components to Support Blind and Low-Vision Visitors in a Greek Hospital. - Damianos Dumi Sigalas; Georgios Papadoulis; Angeliki Kalliampetsou; Emil Valchinov; Christos Sintoris; Aris Dermitzakis (MobileHCI (Companion), 2025)