Technological determinism has been driving conceptions of technology enhanced learning for the last two decades at least. The abrupt shift to the emergency delivery of online courses during COVID-19 has accelerated big tech’s coup d’état of higher education, perhaps irrevocably. Yet, commercial technologies are not necessarily aligned with dialogic conceptions of learning while a technological transmission model negates learners’ input and interactions. Mikhail Bakhtin viewed words as the multivocal bridge to social thought. His theory of the polysemy of language, that has subsequently been termed dialogism, has strong correlations with the semiotic philosophy of American pragmatist Charles Sanders Peirce. Peirce’s semiotic philosophy of signs extends far beyond words, speech acts, linguistics, literary genres, and/or indeed human activity. This study traces links between Bakhtin’s dialogism with Peirce’s semiotics. Conceptual synthesis develops the semiotic-dialogic framework. Taking augmented reality as a theoretical case, inquiry illustrates that while technologies are subsuming traditional pedagogies, teachers and learners, this does not necessarily open dialogic learning. This is because technologies are never dialogic, in and of themselves, although semiotic learning always involves social actors’ interpretations of signs. Crucially, semiotic-dialogism generates theorising of the visual literacies required by learners to optimise technologies for dialogic learning.