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I have received the following message, and I thought it would be worth sharing with the DSC community. It looks like you must pay a tiny amount to access the data. If you are looking for free sensor datasets, click here.

I hope everything is well and that you are having fun at Data Science Central. I thought you'd be interested in CrowdSignals.io, a massive data collection campaign that I'm co-organizing. We're collecting 50+ types of sensor, social, system, and interaction data from 1000s of smartphone users nationwide. This crowdfunding campaign is expected to launch in January 2016 with costs that make the data accessible to everyone (e.g. $2 - $5 per data collection participant). Become a backer of this campaign!

We have a growing network of supporters from top institutions such as MIT, Cornell, EPFL, UW CSE, Microsoft, Tableau among others and because of this we also expect significant media coverage. 

For data collection and algorithm creation services (e.g., sensing and context) beyond what is included in CrowdSignals.io, please see the website for our company, AlgoSnap Inc.

Source for Chart: Plotting Sensor Data

Example of data access (Bluetooth data)

This stream captures periodic Bluetooth scan events. By default, Bluetooth scans occur every 300 seconds.

Example serialized to JSON:
{
"timestamp": "09:50:51:835 29 04 2014",
"timezone": "-0700 PDT",
"type": "Bluetooth",
"start": 1398790251835,
"end": 1398790257451,
"bssid": ["C4:46:19:F7:05:B7", "E0:CA:94:62:14:9E"],
"ssid": ["Dell Wireless 370 Bluetooth Mini-card", "2030002141-GTAF"],
"level": [-90, 89],
"timestamps": [1398790255355, 1398790257451]
}

The Apache Avro schema for Bluetooth data is as follows:
{
"name": "Bluetooth",
"doc": "A segment of Bluetooth scans",
"type": "record",
"aliases": [
"bluetooth"
],
"fields": [
{
"name": "timestamp",
"doc": "Unix time timestamp at which this data segment ended",
"type": "long"
},
{
"name": "timezone",
"doc": "Timezone in which this data was collected",
"type": "int"
},
{
"name": "user_id",
"doc": "The user's ID",
"type": "string"
},
{
"name": "device_type",
"doc": "The type of device (e.g., phone, tablet, watch)",
"type": "string"
},
{
"name": "device_id",
"doc": "The ID of this device (i.e., IMEI for GSM or MEID for CDMA)",
"type": "string"
},
{
"name": "type",
"doc": "The human-readable type of this data",
"type": "string"
},
{
"name": "start",
"doc": "Unix time timestamp for the start of this segment",
"type": "long"
},
{
"name": "end",
"doc": "Unix time timestamp for the end of this segment",
"type": "long"
},
{
"name": "address",
"doc": "Hardware address of the device",
"type": {
"type": "array",
"items": "string"
}
},
{
"name": "name",
"doc": "Human readable name of the device",
"type": {
"type": "array",
"items": "string"
}
},
{
"name": "rssi",
"doc": "Received signal strength index",
"type": {
"type": "array",
"items": "int"
}
},
{
"name": "timestamps",
"doc": "Unix time timestamps at which each Bluetooth device observation occurred",
"type": {
"type": "array",
"items": "long"
}
}
]
}

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