diff --git a/src/main/java/org/ntlab/acanthus_server/entities/Account.java b/src/main/java/org/ntlab/acanthus_server/entities/Account.java
index 1c6cb4e..f35e8b7 100644
--- a/src/main/java/org/ntlab/acanthus_server/entities/Account.java
+++ b/src/main/java/org/ntlab/acanthus_server/entities/Account.java
@@ -26,6 +26,10 @@
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import org.ntlab.acanthus_server.models.Gallery;
 
+import java.time.Duration;
+import java.time.LocalDateTime;
+import java.util.Calendar;
+import java.util.Date;
 import java.util.HashMap;
 import java.util.UUID;
 
@@ -54,6 +58,9 @@
     private String password;
     @JsonIgnore
     private boolean isDummy;
+    @JsonIgnore
+    private LocalDateTime lastAccess;
+
 
     //-----------------------------------------------------------------
     //コンストラクト
@@ -115,6 +122,18 @@
         return (this.token);
     }
 
+    public boolean isCollectToken(String token){
+        int timeoutThreshold = 1;
+
+        var nowDateTime = LocalDateTime.now();
+        if(lastAccess==null) lastAccess = nowDateTime;
+
+        var duration = Duration.between(nowDateTime,lastAccess);
+        if(duration.toHours()>timeoutThreshold) return false;
+
+        return token.equals(this.token);
+    }
+
     public HashMap<Integer, Work> getWorkHashMap() {
         return this.workHashMap;
     }
@@ -170,6 +189,7 @@
         this.email = "d@dummy.com";
         this.password = "nittalab";
         this.token = "abc";
+        this.lastAccess =  LocalDateTime.of(2019, 12, 31, 0, 0, 0);
     }
     //-----------------------------------------------------------------
 }