Table 3.

Overview of studies that utilize Bluetooth technology for indoor positioning.

Authors	Techniques
Altini et al. (2010)	Neural Networks
Diaz et al. (2010)	Signal Coverage Density Method
Subhan et al. (2011)	Fingerprinting
Cabero et al. (2014)	Proximity
Kim et al. (2015)	Time windows and frequency
Li et al. (2015)	Dead Reckoning
Palumbo et al. (2015)	Stigmergy
Mazan and Kovarova (2015)	Neural Networks
Bobek et al. (2015)	Rule learning
Faragher and Harle (2015)	Fingerprinting
Paek et al. (2016)	Geometric Adjustment
Kriz et al. (2016)	Fingerprinting
Castillo-Cara et al. (2017)	Supervised learning
Liu et al. (2018)	Fingerprinting, Dead Reckoning
Sung et al. (2018)	Fingerprinting, Dead Reckoning, Kalman filter
Yohan et al. (2018)	Trilateration, Least squares
Ferreira et al. (2018)	Geometric Adjustment
Zuo et al. (2018)	Graph optimization
Ke et al. (2018)	Multilateration
Subedi & Pyun (2019)	Fingerprinting
AL-Madani et al. (2019)	Fuzzy logic
Mohsin et al. (2019)	Fingerprinting