diff --git a/examples/findmy/main.go b/examples/findmy/main.go
new file mode 100644
index 0000000..671301c
--- /dev/null
+++ b/examples/findmy/main.go
@@ -0,0 +1,84 @@
+// example showing how to use the Bluetooth package to advertise a FindMy compatible device.
+// aka AirTag
+// see https://github.com/biemster/FindMy
+//
+// To build:
+// tinygo flash -target nano-rp2040 -ldflags="-X main.PublicKey='SGVsbG8sIFdvcmxkIQ=='" ./examples/findmy
+//
+// For Linux:
+// go run ./examples/findmy SGVsbG8sIFdvcmxkIQ==
+package main
+
+import (
+	"encoding/base64"
+	"errors"
+	"time"
+
+	"tinygo.org/x/bluetooth"
+)
+
+var adapter = bluetooth.DefaultAdapter
+
+func main() {
+	time.Sleep(2 * time.Second) // wait for USB serial to be available
+
+	key, err := getKeyData()
+	if err != nil {
+		panic("failed to get key data: " + err.Error())
+	}
+	println("key is", PublicKey, "(", len(key), "bytes)")
+
+	opts := bluetooth.AdvertisementOptions{
+		AdvertisementType: bluetooth.AdvertisingTypeNonConnInd,
+		Interval:          bluetooth.NewDuration(1285000 * time.Microsecond), // 1285ms
+		ManufacturerData:  []bluetooth.ManufacturerDataElement{findMyData(key)},
+	}
+
+	must("enable BLE stack", adapter.Enable())
+	adapter.SetRandomAddress(bluetooth.MAC{key[5], key[4], key[3], key[2], key[1], key[0] | 0xC0})
+	adv := adapter.DefaultAdvertisement()
+
+	println("advertising...")
+	must("config adv", adv.Configure(opts))
+
+	println("starting...")
+	must("start adv", adv.Start())
+
+	address, _ := adapter.Address()
+	for {
+		println("FindMy /", address.MAC.String())
+		time.Sleep(time.Second)
+	}
+}
+
+func getKeyData() ([]byte, error) {
+	val, err := base64.StdEncoding.DecodeString(PublicKey)
+	if err != nil {
+		return nil, err
+	}
+	if len(val) != 28 {
+		return nil, errors.New("public key must be 28 bytes long")
+	}
+
+	return val, nil
+}
+
+func findMyData(keyData []byte) bluetooth.ManufacturerDataElement {
+	data := make([]byte, 0, 27)
+	data = append(data, 0x12, 0x19)        // Offline Finding type and length
+	data = append(data, 0x10)              // state
+	data = append(data, keyData[6:]...)    // copy last 22 bytes of public key
+	data = append(data, (keyData[0] >> 6)) // First two bits
+	data = append(data, 0x00)              // Hint (0x00)
+
+	return bluetooth.ManufacturerDataElement{
+		CompanyID: 0x004C, // Apple, Inc.
+		Data:      data,
+	}
+}
+
+func must(action string, err error) {
+	if err != nil {
+		panic("failed to " + action + ": " + err.Error())
+	}
+}
diff --git a/examples/findmy/mcu.go b/examples/findmy/mcu.go
new file mode 100644
index 0000000..531482f
--- /dev/null
+++ b/examples/findmy/mcu.go
@@ -0,0 +1,6 @@
+//go:build tinygo
+
+package main
+
+// PublicKey is the public key of the device. Must be base64 encoded.
+var PublicKey string
diff --git a/examples/findmy/os.go b/examples/findmy/os.go
new file mode 100644
index 0000000..96788b2
--- /dev/null
+++ b/examples/findmy/os.go
@@ -0,0 +1,8 @@
+//go:build !tinygo
+
+package main
+
+import "os"
+
+// PublicKey is the public key of the device. Must be base64 encoded.
+var PublicKey = os.Args[1]