You hide a message of up to 25 words on an object or willing creature, revealed when a trigger you name occurs.
Concentrate
Illusion
Manipulate
Rank
2
Traditions
Arcane, Occult
Traits
Concentrate, Illusion, Manipulate
Cast
2 actions
Range
touch
Targets
1 object or willing creature
Duration
unlimited
You hide a message of up to 25 words on an object or willing creature, revealed when a trigger you name occurs.
Heightened
4th
You can add a simple sensory component to emphasize the message, such as an odor, visual effect, or physical sensation. This addition is obviously illusory and part of the message, lasting only while the message is being read.
6th
As 4th rank, but you can choose how many times the spell repeats the message before it ends; there is no limit to the number of repetitions.
Source: Pathfinder Player Core, p. 328
Bring Embed Message into a Pathfinder 2e game with The DM Screen.