diff --git a/.gitmodules b/.gitmodules
index 3b9d069..37f75fa 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -14,3 +14,7 @@
 	path = vendor/github.com/shazow/rateio
 	url = https://github.com/shazow/rateio
 	branch = master
+[submodule "vendor/github.com/dustin/go-humanize"]
+	path = vendor/github.com/dustin/go-humanize
+	url = https://github.com/dustin/go-humanize
+	branch = master
diff --git a/host.go b/host.go
index 41c2f91..21d799b 100644
--- a/host.go
+++ b/host.go
@@ -330,7 +330,14 @@ func (h *Host) InitCommands(c *chat.Commands) {
 			}
 
 			id := target.Identifier.(*Identity)
-			room.Send(message.NewSystemMsg(id.Whois(), msg.From()))
+			var whois string
+			switch room.IsOp(msg.From()) {
+			case true:
+				whois = id.WhoisAdmin()
+			case false:
+				whois = id.Whois()
+			}
+			room.Send(message.NewSystemMsg(whois, msg.From()))
 
 			return nil
 		},
diff --git a/host_test.go b/host_test.go
index d29a875..22a75e7 100644
--- a/host_test.go
+++ b/host_test.go
@@ -26,7 +26,7 @@ func stripPrompt(s string) string {
 func TestHostGetPrompt(t *testing.T) {
 	var expected, actual string
 
-	u := message.NewUser(&Identity{nil, "foo"})
+	u := message.NewUser(&Identity{id: "foo"})
 	u.SetColorIdx(2)
 
 	actual = GetPrompt(u)
diff --git a/identity.go b/identity.go
index b4de872..cff8924 100644
--- a/identity.go
+++ b/identity.go
@@ -1,9 +1,10 @@
 package sshchat
 
 import (
-	"fmt"
 	"net"
+	"time"
 
+	"github.com/dustin/go-humanize"
 	"github.com/shazow/ssh-chat/chat"
 	"github.com/shazow/ssh-chat/chat/message"
 	"github.com/shazow/ssh-chat/sshd"
@@ -12,7 +13,8 @@ import (
 // Identity is a container for everything that identifies a client.
 type Identity struct {
 	sshd.Connection
-	id string
+	id      string
+	created time.Time
 }
 
 // NewIdentity returns a new identity object from an sshd.Connection.
@@ -20,6 +22,7 @@ func NewIdentity(conn sshd.Connection) *Identity {
 	return &Identity{
 		Connection: conn,
 		id:         chat.SanitizeName(conn.Name()),
+		created:    time.Now(),
 	}
 }
 
@@ -39,14 +42,28 @@ func (i Identity) Name() string {
 	return i.id
 }
 
+// Whois returns a whois description for non-admin users.
 func (i Identity) Whois() string {
+	fingerprint := "(no public key)"
+	if i.PublicKey() != nil {
+		fingerprint = sshd.Fingerprint(i.PublicKey())
+	}
+	return "name: " + i.Name() + message.Newline +
+		" > fingerprint: " + fingerprint + message.Newline +
+		" > client: " + chat.SanitizeData(string(i.ClientVersion())) + message.Newline +
+		" > joined: " + humanize.Time(i.created)
+}
+
+// WhoisAdmin returns a whois description for admin users.
+func (i Identity) WhoisAdmin() string {
 	ip, _, _ := net.SplitHostPort(i.RemoteAddr().String())
 	fingerprint := "(no public key)"
 	if i.PublicKey() != nil {
 		fingerprint = sshd.Fingerprint(i.PublicKey())
 	}
-	// TODO: Include time joined, client, etc.
-	return fmt.Sprintf("name: %s"+message.Newline+
-		" > ip: %s"+message.Newline+
-		" > fingerprint: %s", i.Name(), ip, fingerprint)
+	return "name: " + i.Name() + message.Newline +
+		" > ip: " + ip + message.Newline +
+		" > fingerprint: " + fingerprint + message.Newline +
+		" > client: " + chat.SanitizeData(string(i.ClientVersion())) + message.Newline +
+		" > joined: " + humanize.Time(i.created)
 }
diff --git a/sshd/terminal.go b/sshd/terminal.go
index 8d4b725..23f066b 100644
--- a/sshd/terminal.go
+++ b/sshd/terminal.go
@@ -22,6 +22,7 @@ type Connection interface {
 	PublicKey() ssh.PublicKey
 	RemoteAddr() net.Addr
 	Name() string
+	ClientVersion() []byte
 	Close() error
 }
 
diff --git a/vendor/github.com/dustin/go-humanize b/vendor/github.com/dustin/go-humanize
new file mode 160000
index 0000000..2fcb520
--- /dev/null
+++ b/vendor/github.com/dustin/go-humanize
@@ -0,0 +1 @@
+Subproject commit 2fcb5204cdc65b4bec9fd0a87606bb0d0e3c54e8