Our project includes a mobile application and an interactive device. The mobile application measures the social media addiction level of users, and then provide a relative social media usage quota based on the addiction level. For the quota, we call it "INK". The smart devices are used to shift users' attention from their mobile phones to other activities that they are interested in. The goal of our project is to help them accustomed to staying away from using smartphones.Why do we use “INK” to be our design metaphor?Because we think that the behaviour of scrolling smartphones is like printing. The content on social media is generated like paper printed out from a printer. Daily social media usage quota will be provided to users according to users’ conditions as ‘ink”. The contents on social media are like to be printed out by printers. So when the ink has run out, the content is hardly visible, like printed with a low ink printer.