Tirupati Urban cops and TTD officials have introduced tagging of kids and parents visiting Tirumala to prevent kidnappings. Urban SP KKN Anburajan said that they are testing technical aspects of tags through a pilot project. Based on the results, technical changes will be made in tags, he added. He further stated that the police will probe if tags of parents and kids are not matching. On an average every day, 80,000 devotees visit Tirumala and TTD vigilance and security personnel are entrusted with the task of tagging kids and parents.