PMC:7796058 / 45183-45326 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T314","span":{"begin":0,"end":143},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Using BLE technology is cost-effective compared to other indoor positioning techniques, which use maintenance, installation, and cabling costs."}