diff --git a/auth/auth.go b/auth/auth.go
index 2760665..04c5222 100644
--- a/auth/auth.go
+++ b/auth/auth.go
@@ -13,6 +13,7 @@ import (
 )
 
 type AuthStore interface {
+	Get(user string) bool
 	Register(user, pass string) error
 	Login(user, pass string) (token string, err error)
 	Verify(token string) (session Session, err error)
@@ -39,6 +40,11 @@ func New(path string, hashKey []byte) (AuthStore, error) {
 	return s, err
 }
 
+func (s Htpasswd) Get(user string) bool {
+	_, ok := s.accounts[user]
+	return ok
+}
+
 func (s Htpasswd) Register(user, pass string) (err error) {
 	if _, ok := s.accounts[user]; ok {
 		return errors.New("user already exists")
diff --git a/templates/signin.html b/templates/signin.html
index e9ff082..72b6af0 100644
--- a/templates/signin.html
+++ b/templates/signin.html
@@ -1,10 +1,11 @@
-{{ define "title" }}Sign Up{{ end }}
+{{ define "title" }}登入{{ end }}
 {{ define "main" }}
-<h1>Sign In</h1>
+<h1>登入</h1>
 <form action="/signin" method="POST">
     <label>Email: <input type="text" name="email"></label><br>
     <label>Password: <input type="password" name="password"></label><br>
     {{ with .Error }}<p class="error">{{ . }}</p>{{ end }}
-    <input type="submit" value="Sign Up">
+    <input type="submit" value="登入">
 </form>
+<a href="signup">沒有帳號嗎？註冊</a>
 {{ end }}
diff --git a/templates/signup.html b/templates/signup.html
index a259881..8eed599 100644
--- a/templates/signup.html
+++ b/templates/signup.html
@@ -1,10 +1,11 @@
-{{ define "title" }}Sign Up{{ end }}
+{{ define "title" }}註冊{{ end }}
 {{ define "main" }}
-<h1>Sign Up</h1>
+<h1>註冊</h1>
 <form action="/signup" method="POST">
     <label>Email: <input type="text" name="email"></label><br>
     <label>Password: <input type="password" name="password"></label><br>
     {{ with .Error }}<p class="error">{{ . }}</p>{{ end }}
-    <input type="submit" value="Sign Up">
+    <input type="submit" value="註冊">
 </form>
+<a href="signin">已有帳號嗎？登入</a>
 {{ end }}
diff --git a/user.go b/user.go
index 0fa318f..f6f5727 100644
--- a/user.go
+++ b/user.go
@@ -20,7 +20,7 @@ func (u *User) Dir() string {
 }
 
 func (u *User) FilePath(name string) string {
-	return path.Join(DATA_DIR, u.Email, name)
+	return path.Join(u.Dir(), name)
 }
 
 func (u *User) File(name string) (*os.File, error) {