Research and Development, Net (Tables)

12 Months Ended

Dec. 31, 2020

Research and Development [Abstract]

Schedule of research and development, net

	Year ended
	December 31,
	2020			2019			2018
	USD in thousands
Payroll and related expenses (*)		5,922			5,679			5,793
Subcontracted work and consulting		1,534			3,123			1,744
Share-based payments to service provider		67			37			43
Rent and office maintenance		671			720			629
Travel expenses		54			236			76
Other		415			492			393
Sales of prototypes		(100	)		(77	)		(40	)
		8,563			10,210			8,638