diff --git a/go.mod b/go.mod
index 9588881..0b76e2c 100644
--- a/go.mod
+++ b/go.mod
@@ -9,3 +9,10 @@ require (
 	golang.org/x/crypto v0.39.0
 	golang.org/x/sys v0.33.0
 )
+
+require (
+	github.com/andybalholm/brotli v1.0.6 // indirect
+	github.com/cloudflare/circl v1.5.0 // indirect
+	github.com/klauspost/compress v1.17.4 // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
+)
diff --git a/go.sum b/go.sum
index ea33dbf..9d8067a 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,16 @@
+github.com/andybalholm/brotli v1.0.6 h1:Yf9fFpf49Zrxb9NlQaluyE92/+X7UVHlhMNJN2sxfOI=
+github.com/andybalholm/brotli v1.0.6/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
+github.com/cloudflare/circl v1.5.0 h1:hxIWksrX6XN5a1L2TI/h53AGPhNHoUBo+TD1ms9+pys=
+github.com/cloudflare/circl v1.5.0/go.mod h1:uddAzsPgqdMAYatqJ0lsjX1oECcQLIlRpzZh3pJrofs=
 github.com/juju/ratelimit v1.0.2 h1:sRxmtRiajbvrcLQT7S+JbqU0ntsb9W2yhSdNN8tWfaI=
 github.com/juju/ratelimit v1.0.2/go.mod h1:qapgC/Gy+xNh9UxzV13HGGl/6UXNN+ct+vwSgWNm/qk=
+github.com/klauspost/compress v1.17.4 h1:Ej5ixsIri7BrIjBkRZLTo6ghwrEtHFk7ijlczPW4fZ4=
+github.com/klauspost/compress v1.17.4/go.mod h1:/dCuZOvVtNoHsyb+cuJD3itjs3NbnF6KH9zAO4BDxPM=
+github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
+github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/pires/go-proxyproto v0.8.1 h1:9KEixbdJfhrbtjpz/ZwCdWDD2Xem0NZ38qMYaASJgp0=
 github.com/pires/go-proxyproto v0.8.1/go.mod h1:ZKAAyp3cgy5Y5Mo4n9AlScrkCZwUy0g3Jf+slqQVcuU=
 github.com/refraction-networking/utls v1.7.3 h1:L0WRhHY7Oq1T0zkdzVZMR6zWZv+sXbHB9zcuvsAEqCo=
@@ -8,3 +19,5 @@ golang.org/x/crypto v0.39.0 h1:SHs+kF4LP+f+p14esP5jAoDpHU8Gu/v9lFRK6IT5imM=
 golang.org/x/crypto v0.39.0/go.mod h1:L+Xg3Wf6HoL4Bn4238Z6ft6KfEpN0tJGo53AAPC632U=
 golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
 golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
diff --git a/record_detect.go b/record_detect.go
index 2e0fc2b..df997c2 100644
--- a/record_detect.go
+++ b/record_detect.go
@@ -3,6 +3,7 @@ package reality
 import (
 	"bytes"
 	"encoding/binary"
+	"fmt"
 	"io"
 	"net"
 	"sync"
@@ -14,16 +15,23 @@ import (
 
 var GlobalPostHandshakeRecordsLock sync.Mutex
 
-var GlobalPostHandshakeRecordsLens map[*Config]map[string][]int
+var GlobalPostHandshakeRecordsLens map[string]map[string][]int
 
-func DetectPostHandshakeRecordsLens(config *Config) map[string][]int {
+func InitAllRecords(config *Config) {
+	DetectPostHandshakeRecordsLens(config, "hellochrome_131") // init most used first
+	for f, _ := range ModernFingerprints {
+		DetectPostHandshakeRecordsLens(config, f)
+	}
+}
+
+func DetectPostHandshakeRecordsLens(config *Config, fingerprint string) map[string][]int {
 	GlobalPostHandshakeRecordsLock.Lock()
 	defer GlobalPostHandshakeRecordsLock.Unlock()
 	if GlobalPostHandshakeRecordsLens == nil {
-		GlobalPostHandshakeRecordsLens = make(map[*Config]map[string][]int)
+		GlobalPostHandshakeRecordsLens = make(map[string]map[string][]int)
 	}
-	if GlobalPostHandshakeRecordsLens[config] == nil {
-		GlobalPostHandshakeRecordsLens[config] = make(map[string][]int)
+	if GlobalPostHandshakeRecordsLens[fingerprint] == nil {
+		GlobalPostHandshakeRecordsLens[fingerprint] = make(map[string][]int)
 		for sni := range config.ServerNames {
 			target, err := net.Dial("tcp", config.Dest)
 			if err != nil {
@@ -36,8 +44,9 @@ func DetectPostHandshakeRecordsLens(config *Config) map[string][]int {
 			}
 			detectConn := &DetectConn{
 				Conn:                     target,
-				PostHandshakeRecordsLens: GlobalPostHandshakeRecordsLens[config],
+				PostHandshakeRecordsLens: GlobalPostHandshakeRecordsLens[fingerprint],
 				Sni:                      sni,
+				Fingerprint:              fingerprint,
 			}
 			uConn := utls.UClient(detectConn, &utls.Config{
 				ServerName: sni,
@@ -48,7 +57,7 @@ func DetectPostHandshakeRecordsLens(config *Config) map[string][]int {
 			io.Copy(io.Discard, uConn)
 		}
 	}
-	return GlobalPostHandshakeRecordsLens[config]
+	return GlobalPostHandshakeRecordsLens[fingerprint]
 }
 
 type DetectConn struct {
@@ -56,6 +65,7 @@ type DetectConn struct {
 	PostHandshakeRecordsLens map[string][]int
 	Sni                      string
 	CcsSent                  bool
+	Fingerprint              string
 }
 
 func (c *DetectConn) Write(b []byte) (n int, err error) {
@@ -80,5 +90,33 @@ func (c *DetectConn) Read(b []byte) (n int, err error) {
 			break
 		}
 	}
+	fmt.Printf("REALITY fingerprint probe: %v\tSni: %v\tlen(postHandshakeRecord): %v\n", c.Fingerprint, c.Sni, c.PostHandshakeRecordsLens[c.Sni])
 	return 0, io.EOF
 }
+
+var ModernFingerprints = map[string]*utls.ClientHelloID{
+	// One of these will be chosen as `random` at startup
+	"hellofirefox_99":         &utls.HelloFirefox_99,
+	"hellofirefox_102":        &utls.HelloFirefox_102,
+	"hellofirefox_105":        &utls.HelloFirefox_105,
+	"hellofirefox_120":        &utls.HelloFirefox_120,
+	"hellochrome_83":          &utls.HelloChrome_83,
+	"hellochrome_87":          &utls.HelloChrome_87,
+	"hellochrome_96":          &utls.HelloChrome_96,
+	"hellochrome_100":         &utls.HelloChrome_100,
+	"hellochrome_102":         &utls.HelloChrome_102,
+	"hellochrome_106_shuffle": &utls.HelloChrome_106_Shuffle,
+	"hellochrome_120":         &utls.HelloChrome_120,
+	"hellochrome_131":         &utls.HelloChrome_131,
+	"helloios_13":             &utls.HelloIOS_13,
+	"helloios_14":             &utls.HelloIOS_14,
+	"helloedge_85":            &utls.HelloEdge_85,
+	"helloedge_106":           &utls.HelloEdge_106,
+	"hellosafari_16_0":        &utls.HelloSafari_16_0,
+	"hello360_11_0":           &utls.Hello360_11_0,
+	"helloqq_11_1":            &utls.HelloQQ_11_1,
+	// "hellogolang":            &utls.HelloGolang,
+	// "hellorandomized":        &utls.HelloRandomized,
+	// "hellorandomizedalpn":    &utls.HelloRandomizedALPN,
+	// "hellorandomizednoalpn":  &utls.HelloRandomizedNoALPN,
+}
diff --git a/tls.go b/tls.go
index 22d4960..f5f667b 100644
--- a/tls.go
+++ b/tls.go
@@ -162,7 +162,7 @@ func Value(vals ...byte) (value int) {
 // The configuration config must be non-nil and must include
 // at least one certificate or else set GetCertificate.
 func Server(ctx context.Context, conn net.Conn, config *Config) (*Conn, error) {
-	postHandshakeRecordsLens := DetectPostHandshakeRecordsLens(config)
+	postHandshakeRecordsLens := DetectPostHandshakeRecordsLens(config, "hellochrome_131")
 
 	remoteAddr := conn.RemoteAddr().String()
 	if config.Show {
@@ -473,7 +473,7 @@ func (l *listener) Accept() (net.Conn, error) {
 // The configuration config must be non-nil and must include
 // at least one certificate or else set GetCertificate.
 func NewListener(inner net.Listener, config *Config) net.Listener {
-	go DetectPostHandshakeRecordsLens(config)
+	go InitAllRecords(config)
 	l := new(listener)
 	l.Listener = inner
 	l.config = config