How do I get the names of instances touching each other?

Hi,

I have a 'locator' sprite. I want to test if it touches another instance of the 'locator' sprite, and if so, get the UIDs of both of them.

Not sure how to approach it. Any help will be appreciated :)

When two objects collide you can use system pick nth instance, where 0 and 1 are the two objects colliding. You can use this to reference the two and get their UIDs.