AIC	Akaike Information Criterion
AVSS	Auditory-Vision Substitution Systems
B&C	blind & cane
B&S	blind & SSD
CI	confidence interval
ERM	eccentric rotating mass
ETA	electronic travel aids
LMM	linear mixed model
LRA	linear resonant actuator
LS	least square (means)
MLE	Maximum Likelihood Estimate
H0	null hypothesis
H1…n	hypothesis 1 to n (numbered)
O&M	orientation & mobility (training)
PS	practice sessions
Q1…n	question 1 to n (numbered)
S&C	sighted & cane
S&S	sighted & SSD
SMC	Sensorimotor Contingencies
SS	Sensory Substitution
SSD	Sensory Substitution Device
SUS	System Usability Score
ToF	Time of Flight
TS	trial session
TVSS	Tactile-Vision Substitution Systems
VIP	visually impaired people