a first motion detector, a second motion detector, a first radio-frequency identification (RFID) reader, a second RFID reader, a flap sensor, at least one processor, and a memory;

one or more applications configured to run on the at least one processor, wherein the one or more applications are communicatively coupled with the first motion detector, the second motion detector, the first RFID reader, the second RFID reader, the flap sensor, and the memory;

a motor for locking and unlocking a pet flap of the pet door, wherein the pet flap is rotatably attached to an upper portion of the pet door, wherein the one or more applications are communicatively coupled with the motor;

the first motion detector for monitoring movement in a first detection region;

the second motion detector for monitoring movement in a second detection region, wherein the pet flap of the pet door occupies a plane separating the first detection region from the second detection region when the pet flap is in a locked position;

the one or more applications configured to receive a first motion signal from the first motion detector indicating movement of a pet in the first detection region, the receiving the first motion signal including activating an access sequence, the access sequence including,

activating the first RFID reader to read an RFID tag attached to the pet,

authenticating a RFID number extracted from the RFID tag in a first authentication process,

instructing the motor to unlock the pet flap after successful completion of the first authentication process, wherein the unlocked pet flap allows passage of the pet from the first detection region to the second detection region,

activating the flap sensor for monitoring a first angle of the pet flap relative to the plane,

activating the second RFID reader to read the RFID tag attached to the pet when the monitored first angle is greater than a threshold degree value relative to the plane,

authenticating the RFID number extracted from the RFID tag in a second authentication process,

instructing the motor to lock the pet flap after successful completion of the second authentication process.