The electronic devices described herein are configured to enhance user experience associated with using a pen or other writing implement and capturing the content written or drawn. A cartridge device is coupled to or included in the pen or writing implement. The cartridge device is configured to collect pen input based on the pen being used by a user to write or draw. Collected pen input is saved on the cartridge device and, when a connection to a network storage device or cloud server is detected, the collected pen input is uploaded. The cartridge device may be associated with a user account based on user credentials, such that pen input stored and/or uploaded is associated with the user account on the cartridge device and don the network storage device or cloud server.