If it's ant-sized then stitches are unnecessary
A microchip implant for a pet is typically injected. The wound is self-healing. You haven't said precisely what part of the 'temple' is pinpointed or how deep the implant is.
A microchip implant is an identifying integrated circuit placed under the skin of an animal. The chip, about the size of a large grain of rice, uses passive RFID (Radio Frequency Identification) technology, and is also known as a PIT (Passive Integrated Transponder) tag.
Although such tags are detectable only at close quarters, your question indicates that the technology in your scenario exists to make an implant of that size active.
Implant migration may be a problem and cause discomfort or even serious problems
Anything implanted into the body may migrate unless it is anchored to bone in such a way that it isn't rejected. Note that bone is for the most part a living tissue whilst the organism is alive.
Migration of a contraceptive subcutaneous device into the pulmonary
artery. Report of a case
The insertion of implants without an adequate primary stability or with a lack of osseointegration at this level, can frequently lead to accidental displacement into the maxillary sinus. This complication requires a correct management and, if this surgical complication is not treated adequately, the implant can migrate to upper craniofacial structures causing surgical complications due to foreign-body reactions, infection and tissue necrosis and the collapse of the sinus clearance.
Accidental displacement and migration of endosseous implants into
adjacent craniofacial structures: A review and update
Tracking of animals (and probably humans) is already a thing
With the Animal Tracker app, you can follow the movements of wild animals all over the world that are being tracked in near-real time! These movements are collected by tiny GPS tags carried by the animals and are stored at Movebank
COOL OR CREEPY? HUMAN-IMPLANTED MICROCHIPS ARE HERE