Double letter Macbook Pro 2018

Hi JohnEngen,

Thanks for coming to Apple Support Communities for help with your MacBook Pro keyboard typing double letters.

It's possible the keyboard needs cleaning. I can point you to this page, with directions to clean the keyboard: How to clean the keyboard of your MacBook or MacBook Pro.

If the issue still exists after trying this, contact Apple Support.

Have a fantastic day!

It was an MacBook Pro 15 inch 2016 this was a problem. Not 2018

Take it in— you qualify for keyboard replacement:

Apple has determined that a small percentage of the keyboards in certain MacBook and MacBook Pro models may exhibit one or more of the following behaviors: 

• Letters or characters repeat unexpectedly
• Letters or characters do not appear
• Key(s) feel "sticky" or do not respond in a consistent manner

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test 

Make an appointment for a hardware issue—

https://www.apple.com/retail/geniusbar/

https://checkcoverage.apple.com/

https://support.apple.com/my-support

https://support.apple.com/en-lamr/aasp-program

From iOS online Genius Bar appointment: 

https://itunes.apple.com/us/app/apple-support/id1130498044?mt=8

Verify your Mac

>About this Mac for exact Mac /model /year touchbar?

https://www.apple.com/support/keyboard-service-program-for-macbook-and-macbook-pro/

The 2018 does not qualify for this service program— I would suggest you try adjusting trackpad / keyboard preference settings /key repeat /key delay settings.

>System Preferences>Keyboard>Keyboard