1. A system comprising: a transponder associated with an offender; a radio frequency identification reader configured to transmit an interrogating signal to the transponder and receive an identifying signal in response to the transponder receiving the interrogating signal; a server configured to receive data from the radio frequency identification reader through a network, transmit the received data to a web service through the network, and receive an alert from the web service that a monitoring rule of a plurality of monitoring rules associated with the offender was violated, wherein the radio frequency identification reader is a first radio frequency identification reader positioned within range of an origin of a path that the offender is to travel, wherein the plurality of monitoring rules include a first monitoring rule defining a direction that the offender is permitted to travel past the first radio frequency identification reader; a second radio identification reader positioned within range of a destination of the path, wherein a second monitoring rule of the plurality of monitoring rules indicates that the transponder is to be detected by the second radio frequency identification reader within a first specified period of time; and a third radio frequency identification reader situated within range of the path between the first radio frequency identification reader and the second radio frequency identification reader.