You can sign up as a Kerika user with any Google ID: even a simple Gmail address will work.
As part of the sign-up process, Google asks if it is OK for Kerika to access your Google Drive.
(You need to allow this for Kerika to work properly, but if you change your mind later, you can easily stop Kerika from working with your Google Drive.)
All your Kerika related files are neatly stored within a single folder called "Kerika.com". Inside this folder you will see sub-folders for your own Kerika account, and for each other account where you have joined one of the board teams.
When you add files to a Kerika board, by default these are converted to the Google Docs format so that they can be accessed and edited from any browser.
But, if you like to keep files in their original Microsoft Office format, you can set a user preference to retain the original formats when your files are shared using Google Drive.
Your board team members always have the right access to the right files:
You don't have to worry about managing file permissions or file storage in any way: you can just deal with tasks and people in a normal way, and be confident that your files are always getting shared the right way, with the right people.
Kerika plays nicely with all of your other Google Drive files, and all of your other applications and tools. Instead of spraying your files all over your Google Drive, Kerika puts everything inside a single folder called "Kerika.com".
Inside this folder you will find a subfolder named for your personal Kerika account. (Remember: every user gets their very own Kerika account.) And, you will find subfolders that match all the other Kerika users who have added you to their boards.
For example, if Alice is a user, and is working on boards owned by Bob and Charles, Alice's Google Drive will
contain folders that look like this:
Alice's Google Drive
As Alice creates more boards in her account, more subfolders will appear inside her Google Drive, all located in Google Drive > Kerika.com > Alice's Account
And, as Alice gets added to more boards that are owned by Bob, corresponding subfolders will get added to her Google Drive, like this: Google Drive > Kerika.com > Bob's Account > Another Board
This neat arrangement of files is managed by Kerika, so everything seems to just work like magic...