Implementations of a child safety system is provided. Implementations of a child safety system comprises portable transmitter configured to transmits a wireless signal compatible with Bluetooth technology and a portable computing device configured to receive the wireless signal and compute a distance between the portable computing device and the transmitter based on the signal strength of the wireless signal received. The portable computing device further is configured to sound an alarm on the portable computing device once the distance between the portable computing device and the portable transmitter equals or exceeds a preset distance.