A mobile computing device having a processor, the mobile device comprising: a note management application, implemented by the processor, configured to: extract a first group of digital notes from a first image of a first scene that includes a first plurality of separately moveable physical notes, extract a second group of digital notes from a second image of a second scene that includes a second plurality of separately moveable physical notes, and maintain the first group of digital notes and the second group of digital notes, wherein maintaining the first group of digital notes includes storing, for each of the digital notes included within the first group of digital notes, metadata associating each respective digital note with the first group of digital notes, and storing, for each of the digital notes included within the second group of digital notes, metadata associating each respective digital note with the second group of digital notes; an image rendering module, implemented by the processor, configured to render a first group image representing the first group of digital notes and a second group image representing the second group of digital notes; and a user interface configured to display the first group image and the second group image, wherein the user interface is further configured to receive a first user input indicating a first position within the first group image and a second user input indicating a second position within the second group image, and wherein the note management application is further configured to, responsive to receiving the first user input and the second user input: identify a digital note in the first group of digital notes based on the first position, wherein stored metadata for the identified digital note associates the identified digital note with the first group of digital notes, modify the first group by removing the identified digital note from the first group, modify the second group by adding the identified digital note to the second group, and update the metadata for the identified digital note to reflect that the identified digital note is associated with the second group of digital notes and is not associated with the first group of digital notes. a note management application, implemented by the processor, configured to: extract a first group of digital notes from a first image of a first scene that includes a first plurality of separately moveable physical notes, extract a second group of digital notes from a second image of a second scene that includes a second plurality of separately moveable physical notes, and maintain the first group of digital notes and the second group of digital notes, wherein maintaining the first group of digital notes includes storing, for each of the digital notes included within the first group of digital notes, metadata associating each respective digital note with the first group of digital notes, and storing, for each of the digital notes included within the second group of digital notes, metadata associating each respective digital note with the second group of digital notes; extract a first group of digital notes from a first image of a first scene that includes a first plurality of separately moveable physical notes, extract a second group of digital notes from a second image of a second scene that includes a second plurality of separately moveable physical notes, and maintain the first group of digital notes and the second group of digital notes, wherein maintaining the first group of digital notes includes storing, for each of the digital notes included within the first group of digital notes, metadata associating each respective digital note with the first group of digital notes, and storing, for each of the digital notes included within the second group of digital notes, metadata associating each respective digital note with the second group of digital notes; an image rendering module, implemented by the processor, configured to render a first group image representing the first group of digital notes and a second group image representing the second group of digital notes; and a user interface configured to display the first group image and the second group image, wherein the user interface is further configured to receive a first user input indicating a first position within the first group image and a second user input indicating a second position within the second group image, and wherein the note management application is further configured to, responsive to receiving the first user input and the second user input: identify a digital note in the first group of digital notes based on the first position, identify a digital note in the first group of digital notes based on the first position, wherein stored metadata for the identified digital note associates the identified digital note with the first group of digital notes, modify the first group by removing the identified digital note from the first group, modify the second group by adding the identified digital note to the second group, and update the metadata for the identified digital note to reflect that the identified digital note is associated with the second group of digital notes and is not associated with the first group of digital notes. modify the first group by removing the identified digital note from the first group, modify the second group by adding the identified digital note to the second group, and update the metadata for the identified digital note to reflect that the identified digital note is associated with the second group of digital notes and is not associated with the first group of digital notes.