Post on 19-Oct-2014
description
Hardwired NYC - September 9, 2014
@stevecheney | Co-Founder and SVP Business Operations
Estimote Physics of Beacons & Positioning
Estimote is the global leader in iBeacon solutions25,000+ developers are building on our hardware and software
platform
50+ employees in 2 offices: New York & Europe
Certified under Apple iBeacon program
$3.1 in funding YC Summer 2013 class
Shipping worldwide since August 2013
Estimote Stickers - “Nearables”
Virgin Atlantic @ Heathrow
Smartphones are amazing…
But…they’re not actually that smart
They lack context on your immediate surroundings
Physics and Beacon tech crash course
Beacon broadcasting radiowaves
Current in the wire creates magnetic field
wire
magnetic field
current
AC current creates electromagnetic wave
oscillator
2.4 Ghz ~ 13 cm
Electromagnetic waves
Receiving radiowaves
Bluetooth antenna
Digitalizing and decoding information
iBeacon identification
B9407F30-F5F8-466E-AFF9-25556B57FE6D
12223
123
Proximity UUID: 128-bit unique identifier
Major: 16-bit unsigned integer
Minor: 16-bit unsigned integer
Combining UUID with external content
RSSI = Received Signal Strength Indicator
distance
received power
Antenna radiation pattern
Different antenna design
Estimote Beacon antenna
Bluetooth signals advertising
Every 100 or so ms
RSSI variation
iOS Core.location noise reduction
Noise reasonsInterference Diffraction
Multipath Absorption
Distance estimation
r = distance
I = power density ~ RSSI
P = broadcasted power
r = P
4 I
Extended range & trialiteration
x1, y1
x2, y2
x3, y3
r1r2
r3
Narrowed range & cell network
Estimote Indoor Positioning SDK
Estimote Indoor Positioning SDK
Steve Cheneysteve@estimote.com@stevecheney
Thank you& Q&A