Why a set month makes the check actually happen
Microchip records do not expire on their own, but they quietly go stale: a phone number changes, a family moves, a backup contact gets a new number, and the registry still points a finder to a dead end. Tying the check to one fixed month, the same month as her vaccination visit or your own household admin, turns it into a habit rather than a resolution. The goal of the yearly check is simple to state and easy to skip, which is exactly why it needs a date, a short list, and a record that it was done.
Check the registry entry line by line
Open the actual registry record, online or by phone, and read every field as if you were a stranger relying on it. Confirm your primary phone number, a second number, your current address, and an email you still use. Check the backup or emergency contact: is that person still willing, reachable, and aware they are listed? Then read your cat's side of the record: name, breed or description, color and markings, sex, and age. A description written when she was a kitten may no longer match the adult cat a finder is describing, so update anything that has visibly changed.
Match the numbers across three places
Compare the chip number character by character in three places: the registry entry, your own paperwork at home, and the number your clinic holds. A single transposed digit, copied wrongly years ago, means a scan at a shelter returns a record that appears not to exist. If the numbers disagree anywhere, contact the registry and the clinic to correct the source rather than assuming the odd one out is a harmless typo. This comparison takes minutes and is the part of the check owners most often skip because each number looks right in isolation.
Prove the chip itself still works
A record can be perfect while the chip is unreadable. Ask your clinic to scan your cat during a routine visit in your check month and confirm the scanner displays the full number. Chips can occasionally migrate from the shoulder area, so a scan that checks a wider area tells staff where hers sits now, which you can note on her record. If a scan ever fails to find a chip you know she has, discuss the options with your veterinarian promptly, because the registry entry only helps when a scanner can trigger it.
Close the loop and set the next reminder
Write the date of the completed check on her home record, note any changes you made, and set the reminder for the same month next year before you close the folder. Owners who move house or change numbers mid-year should update the registry at that moment as well, treating the yearly check as a backstop rather than the only chance. Gathered this way, the chip stops being a fact you assume and becomes a fact you have verified. Keeping that verified number inside her KinsLe Pet Passport, alongside her vaccination and vet records, makes the next yearly comparison a side-by-side glance.