To catch up to Greenway and get the white Lab coat (Perch disguise) in 007 First Light, you need to retrieve a locker key from a cleaning robot’s vacuum bin, then open locker #6 in the locker room across the hall.
White Lab Coat (Perch) Steps
Detailed Step-by-Step Guide
Step 1: Eavesdrop on the NPC conversation
As soon as you exit the room, eavesdrop on the nearby conversation.

The NPC will mention they lost a key that opens a locker with a lab coat, and that cleaning robots will find it.

Step 2: Call the cleaning robot
Press the button right next to you to call the cleaning robot over.

The robot roams freely and will eventually roll to empty its bin.

Step 3: Wait for the robot to empty its bin
Watch the robot. It will use a mechanism to empty its bin into the waste disposal room on the other side of the wall. Inside the bin, you’ll see the key icon.

Step 4: Sneak into the waste disposal room
You need to get into the room where the bin empties.

You have two options:
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Bluff your way in (requires energy for your watch).

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Hack the printer behind the guard to make noise, distracting him so you can sneak around the side.
If you don’t have energy, activate the air conditioning to create a condensation cloud.

This will distract the guard.
Step 5: Retrieve the locker key
Once inside, open the vacuum waste disposal bin.

And search it to get the locker key.

You can now leave the room without being noticed.

Step 6: Go to the locker room
Head across the hall directly in front of you to the locker room.

Step 7: Open locker #6
Go to locker number 6.

Use the key to open it and retrieve the white lab coat (Perch disguise).

Step 8: Meet Greenway
Put on the lab coat and follow the path to meet Greenway in the conference room.

You’ll need to get past the others.

And take the stairs to get upstairs.

And complete this little objective.

Critical Mistakes to Avoid
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Don’t skip eavesdropping — you won’t know the key is in the vacuum without it.
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Don’t rush the robot — wait for it to fully empty the bin before entering.
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If the bluff button is greyed out, you need more energy; recharge your watch or use the printer hack instead.
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Locker #6 is specific — other lockers won’t have the coat.
You’ve now earned the white lab coat and caught up to Greenway — but this is just the beginning of Bond’s journey to becoming 007. The disguise system is your biggest weapon in IO Interactive’s most ambitious spy game yet, and mastering it now will save you hours later.