There is no shortage of locked doors and safes in Dead Island 2. It's best not to sleep on these since they always contain valuable resources and weapons.
In the Venice Beach region, you will take shelter in the Blue Crab safe house. There is a storage room here, which is unsurprisingly locked. To open it, you will need a keycard. Here's where you can find the Blue Crab Storage keycard in Dead Island 2.
How to get the Blue Crab storage keycard in Dead Island 2
You can find the Blue Crab storage keycard in the basement. From the storage room, turn left and go towards the Toilets sign. Take the staircase to reach the basement.
Once you're in the basement, look for the door with the "Staff Only" sign and go inside. The Blue Crab storage keycard is on the dead body surrounded by bongs.
Go back to the main floor, and unlock the Blue Crab storage to find a rare-tier weapon. In our first playthrough, we got the Creamator Whispering Blade.
Every time you fast-travel to the Blue Crab safe house, don't forget to check the storage, as there will always be two Med kits for you to grab.
That concludes our guide on how to get the Blue Crab storage keycard in Dead Island 2.