A glass panel on-production-line stress testing and retrieving system, comprising: an identification code (1110a, 1110b, 1110c, 1110d, 1110e) installed on a surface of each of a plurality of glass panels (110, 1102, 1103, 1104, 1105) prior to being processed, wherein the identification code (1110a, 1110b, 1110c, 1110d, 1110e) is unique to each of the plurality of glass panels (110, 1102, 1103, 1104, 1105); at least one stress sensor to test a stress at different testing locations on the surface of each of the plurality of glass panels (110, 1102, 1103, 1104, 1105) being processed on a production line including a tempering or a semi-tempering step for manufacturing reinforced glass panels, and to obtain the stress information; a sensor controller to place the at least one stress sensor on the different testing locations, wherein the sensor controller moves the at least one stress sensor along a direction parallel to the surface of each of the plurality of glass panels (110, 1102, 1103, 1104, 1105) and along a direction vertical to the surface of each of the plurality of glass panels (110, 1102, 1103, 1104, 1105); and a glass panel production information database to store the stress information based on the identification code (1110a, 1110b, 1110c, 1110d, 1110e), wherein the glass panel production information database provides stress information corresponding to an identification code (1110a, 1110b, 1110c, 1110d, 1110e) installed on a surface of one of the plurality of glass panels (110, 1102, 1103, 1104, 1105) upon a mobile scanning device reads the identification code (1110a, 1110b, 1110c, 1110d, 1110e) and submits a retrieval request. an identification code (1110a, 1110b, 1110c, 1110d, 1110e) installed on a surface of each of a plurality of glass panels (110, 1102, 1103, 1104, 1105) prior to being processed, wherein the identification code (1110a, 1110b, 1110c, 1110d, 1110e) is unique to each of the plurality of glass panels (110, 1102, 1103, 1104, 1105); at least one stress sensor to test a stress at different testing locations on the surface of each of the plurality of glass panels (110, 1102, 1103, 1104, 1105) being processed on a production line including a tempering or a semi-tempering step for manufacturing reinforced glass panels, and to obtain the stress information; a sensor controller to place the at least one stress sensor on the different testing locations, wherein the sensor controller moves the at least one stress sensor along a direction parallel to the surface of each of the plurality of glass panels (110, 1102, 1103, 1104, 1105) and along a direction vertical to the surface of each of the plurality of glass panels (110, 1102, 1103, 1104, 1105); and a glass panel production information database to store the stress information based on the identification code (1110a, 1110b, 1110c, 1110d, 1110e), wherein the glass panel production information database provides stress information corresponding to an identification code (1110a, 1110b, 1110c, 1110d, 1110e) installed on a surface of one of the plurality of glass panels (110, 1102, 1103, 1104, 1105) upon a mobile scanning device reads the identification code (1110a, 1110b, 1110c, 1110d, 1110e) and submits a retrieval request.