“…It is a cultural technique (Parikka, 2013; Siegert, 2015)—linking body operations (typing), tools (smartphones), and concepts about contemporary textuality—which rearranges the traditional division of labor between the writing digits: the thumbs, which traditionally supported the grip of writing tools, are now promoted to communication procedures; the rest of the fingers, which were disciplined to writing and then typing techniques, are now demoted to holding the mobile phone. The mobility of users and devices dictates behavioral modifications (Packer and Oswald, 2010), and while the new dominancy of the thumb does not mean that thumb-typing is the only option—indeed, users engage with the smartphone in many alternative ways (Palin et al, 2019)—it still suggests a new functionality of the thumb as executing rather than supporting finger, and promotes an unprecedented equivalency and interchangeability in finger employment to typing. This, I propose, problematizes traditional conceptions of textuality, its performance, and authorship.…”