zephr.xyz

GPS Reimagined

Next generation location-based solutions

<1m accuracy for mobile phones and wearables

The Zephr
Solution

For one of the most pervasive technologies of the modern age, GPS can be frustratingly inconsistent. Our goal at Zephr is simple: software that makes GPS for mobile devices more accurate and consistent for everyone.

A box icon with nodes and an open section on the side.

BREAKTHROUGH TECHNOLOGY

Zephr’s networked GPS solution enhances accuracy by 5X-10X (<1m) for mobile devices and wearables. This patent-pending technology delivers unprecedented location accuracy, reliability and error correction by interconnecting satellite measurements across multiple devices – and all while ensuring strong user privacy.

EASY INTEGRATION

Coming soon!

Zephr’s enhanced GPS is a standalone SDK product that will allow any mobile app to easily upgrade GPS accuracy by embedding the feature.

UNLOCKS NEW MARKETS

Next-generation GPS creates new potential for AR, gaming, mobility, logistics, safety, sports, mapping and more.

ECONOMIC VALUE

Every second of improved GPS accuracy translates to millions of dollars in economic value.

How It Works

Current State

Building bounce and blocked line-of-sight creates errors and limits accuracy

A satellite communicating with a smaret phone to determine its position.

A triangular band of color as if being beamed down from the satellite to phone graphic above it.

3-5 meter accuracy (best case scenario)

Zephr Technology

Turns every mobile phone into a base station to generate an ensemble error correction

A satellite beaming down to a network of cell phones that more accurately determine positioning.

A triangular band of color as if being beamed down from the satellite and cell phone network graphic above.

<1 meter accuracy

How It Works

Current State

Building bounce and blocked line-of-sight creates errors and limits accuracy

3-5 meter accuracy (best case scenario)

Zephr Technology

Turns every mobile phone into a base station to generate an ensemble error correction

<1 meter accuracy

Zephr Field
Testing Results

Zephr's testing is a simple but challenging kinematic test where we used only the GPS constellation and the L1 band data to power the Zephr location solver. Our testing protocol is based on using four test mobile devices (dual band Pixel 4's), a SparkFun RTK system for ground truth and a Samsung A12 as a single band test device.

GPS

Zephr

RTK ground truth

1m ground truth buffer

50cm ground truth buffer

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Zephr vs Standard Smartphone Positioning Solutions

Zephr Single-band / Single-Constellation

Single-band / Multi-Constellation

Dual-Band / Multi-Constellation

0.5m

Zephr Kinematic Field Testing - Louisville, CO

Zephr Solution - Horizontal Error [m]

Pixel Dual-band / Multi-Constellation - Horizontal Error [m]

Samsung Single-band / Multi-constellation - Horizontal Error [m]

Mean Error

CE75 Error

CE90 Error

ZEPHR SOLUTION

.55 m

.75 m

1.06 m

PIXEL 4

1.89 m

2.41 m

3.00 m

SAMSUNG A12

1.89 m

2.61 m

2.78 m

1/3

Zephr Solution - Horizontal Error [m]

Zephr Kinematic Field Testing - Louisville, CO

A table comparing results side by side from the accuracy plots displayed above.

Applications

Augmented Reality

A sub-50cm accurate GPS unlocks a large number of AR experiences without the need for spending billions in global, city-wide 3D mapping.

Augmented Reality

A sub-50cm accurate GPS unlocks a large number of AR experiences without the need for spending billions in global, city-wide 3D mapping.

A hand holding a smart phone outdoors that displays a game with a map.

Gaming

accuracy makes new, interactive game mechanics possible. Users can tag each other, avoid obstacles or intersect with specific locations.

Autonomy

To succeed at scale, autonomous terrestrial and aerial vehicles need not only accurate location, but also be resilient to drops/outages. Zephr’s networked GNSS provides both.

A tangle of many intersecting highways viewed from high above.

Rideshare

Zephr’s improved accuracy and resiliency to urban signal obstacles allows drivers to better locate riders - saving millions of dollars per year.

A hand shown holding 3 stacked black delivery containers often associated with containing food.

Delivery Services

More accurate GPS data allows users to be more quickly routed, avoid multipath errors and target precise entrances to a building.

A close up of a runner's hand and feet in the starting position just before beginning a race on a track.

Fitness & Sports

Persistent errors in current GPS make sports tracking inaccurate for both athlete pacing and comparative times, especially over long distance segments.

A view above a street showing a single person crossing an intersection on a crosswalk.

Collision Avoidance

Our GPS augmentation creates the potential for a new generation of pedestrian to vehicle collision avoidance.

A helicopter in mid-air with a sunset in the distance showing 2 people hanging suspended on a line beneath it.

Search & Rescue

Zephr’s addition of hyper precise relative distance measurements between devices creates a powerful tool for search & rescue and natural disaster scenarios.

Privacy

At Zephr, our sole mission is to provide the best possible location experience for our users in terms of accuracy and resiliency - that’s it. We do not track our users or sell their information to third-party marketing firms.

The way Zephr’s technology works, user information is always minimized, anonymized, short-lived, never sold or transferred, and protected from third-party access.

In the simplest terms, Zephr is improving the quality of location for users so that when they do give permission for its use, they get the best possible location experience.

Our privacy strategy rides on top of the existing policies from Google and Apple. Therefore, any permissions set in an app in Google or Apple will also be reflected in Zephr. The user ultimately controls which apps get access to their location data through these existing permission access controls.

The Founders

Zephr’s founders have worked together for over 17 years in the data and mapping industry.