Fill in the blanks to complete a summary of the entire passage. A passthought is a specific thought ______...

Fill in the blanks to complete a summary of the entire passage.
A passthought is a specific thought ______ to unlock a device. Once set up, the passthought system ______ the brainwave pattern of the user’s thought. There are problems yet to be solved, but ______ with a passthought might be common in the future.